[apops] Cisco Security Advisory: Cisco IOS Next Hop Resolution Protocol

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Next Hop Resolution Protocol Vulnerability
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Wed, 8 Aug 2007 12:37:21 -0400
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      Cisco Security Advisory: Cisco IOS Next Hop Resolution Protocol Vulnerability
      
      Advisory ID: cisco-sa-20070808-nhrp
      
      http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml
      
      Revision 1.0
      
      For Public Release 2007 August 08 1600 UTC (GMT)
      
      - -----------------------------------------------------------------------
      
      Summary
      =======
      
      The Cisco Next Hop Resolution Protocol (NHRP) feature in Cisco IOS
      contains a vulnerability that can result in a restart of the device or
      possible remote code execution.
      
      NHRP is a primary component of the Dynamic Multipoint Virtual Private
      Network (DMVPN) feature.
      
      NHRP can operate in three ways: at the link layer (Layer 2), over
      Generic Routing Encapsulation (GRE) and multipoint GRE (mGRE) tunnels
      and directly on IP (IP protocol number 54). This vulnerability affects
      all three methods of operation.
      
      NHRP is not enabled by default for Cisco IOS.
      
      This vulnerability is addressed by Cisco bug IDs CSCin95836 
      for non-12.2 mainline releases and CSCsi23231 for 12.2 mainline releases.
      
      This advisory is posted at 
      http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml.
      
      Note: The August 08, 2007 publication includes four Security Advisories
      and one Security Response. The advisories all affect IOS, one
      additionally affects Cisco Unified Communications Manager as well. Each
      advisory lists the releases that correct the vulnerability described in
      the advisory, and the advisories also detail the releases that correct
      the vulnerabilities in all four advisories. Individual publication
      links are listed below:
      
        * Cisco IOS Information Leakage Using IPv6 Routing Header
          http://www.cisco.com/warp/public/707/cisco-sa-20070808-IOS-IPv6-leak.shtml
        * Cisco IOS Next Hop Resolution Protocol Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml
        * Cisco IOS Secure Copy Authorization Bypass Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20070808-scp.shtml
        * Voice Vulnerabilities in Cisco IOS and Cisco Unified Communications
          Manager
          http://www.cisco.com/warp/public/707/cisco-sa-20070808-IOS-voice.shtml
        * Cisco Unified MeetingPlace XSS Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sr-20070808-mp.shtml
      
      Affected Products
      =================
      
      Vulnerable Products
      +------------------
      
      Cisco devices running IOS that are configured for NHRP functionality
      are affected. NHRP is also used in conjunction with the DMVPN feature.
      
      Affected devices may have the following command in the running
      configuration:
      
                      ip nhrp network-id <ID>
                      
      
      After the above command is configured, simply removing the command from
      the running configuration is not sufficient to disable the NHRP
      service. Customers can check the output of the following command to see
      if the NHRP process is enabled:
      
          router#show processes | include NHRP
      
            42 Mwe   F8B8CC           24         76     315 7836/12000  0 NHRP
      
      
      If the preceding command displays the NHRP process, NHRP is running on
      the IOS device.
      
      Customers who do not have NHRP configured but see the process in the
      process table can take the following action to eliminate their
      exposure:
      
      Ensure that NHRP is not configured in the device's startup
      configuration and reload the device. After the device is restarted with
      NHRP removed from the configuration, the NHRP process will not be
      running.
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
        * Cisco devices that do not run Cisco IOS are not affected.
        * Cisco devices that are running Cisco IOS XR are not affected.
      
      No other Cisco devices are known to be affected.
      
      Details
      =======
      
      NHRP is a standards-based protocol that is aimed at providing Layer 2
      to Layer 3 resolution for Nonbroadcast Multiaccess networks (NBMA).
      
      Network devices and hosts can use NHRP to discover the addresses of
      other devices connected to an NBMA network.
      
      For more information on NHRP, see 
      http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080435815.html
      
      NHRP is an open standard and the public RFC is on the web at:
      
      http://www.rfc-editor.org/rfc/rfc2332.txt 
      
      NHRP has extended uses in DMVPNs, can be carried in GRE and mGRE
      tunnels or can be transported directly within IP datagrams as IP
      protocol number 54.
      
      Workarounds are available for protecting routers from NHRP packets sent
      over GRE or mGRE tunnels or sent as NHRP directly in IP datagrams.
      
      No workarounds exist for blocking Layer 2 NHRP packets. However, Layer
      2 NHRP packets are not routable and must be sent by a Layer 2-adjacent
      device.
      
      This vulnerability was addressed by two different bug IDs. A Cisco IOS
      release only needs to contain one of these bug fixes to be repaired for
      this vulnerablility. The bug IDs are CSCin95836 (for non-12.2 mainline 
      releases) and CSCsi23231 (for 12.2 mainline releases).
      
      Vulnerability Scoring Details
      +----------------------------
      
      Cisco is providing scores for the vulnerability in this advisory based
      on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in
      this Security Advisory is done in accordance with CVSS version 1.0.
      
      Cisco will provide a base and temporal score. Customers can then
      compute environmental scores to assist in determining the impact of the
      vulnerability in individual networks.
      
      Cisco PSIRT will set the bias in all cases to normal. Customers are
      encouraged to apply the bias parameter when determining the
      environmental impact of a particular vulnerability.
      
      CVSS is a standards based scoring method that conveys vulnerability
      severity and helps determine urgency and priority of response.
      
      Cisco has provided a FAQ to answer additional questions regarding CVSS
      at
      
      http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html.
      
      Cisco has also provided a CVSS calculator to help compute the
      environmental impact for individual networks at
      
      http://intellishield.cisco.com/security/alertmanager/cvss.
      
      CSCin95836 - Buffer overflow in NHRP protocol
      
      CVSS Base Score - 8.0               
        Access Vector -            Remote
        Access Complexity -        High 
        Authentication -           Not Required 
        Confidentiality Impact -   Complete    
        Integrity Impact -         Complete   
        Availability Impact -      Complete  
        Impact Bias -              Normal   
      
      CVSS Temporal Score - 6.3
        Exploitability -           Proof-of-Concept
        Remediation Level -        Official-Fix   
        Report Confidence -        Confirmed     
      
      
      CSCsi23231 - Buffer overflow in NHRP protocol
      
      CVSS Base Score - 8.0               
        Access Vector -            Remote
        Access Complexity -        High 
        Authentication -           Not Required 
        Confidentiality Impact -   Complete    
        Integrity Impact -         Complete   
        Availability Impact -      Complete  
        Impact Bias -              Normal   
      
      CVSS Temporal Score - 6.3
        Exploitability -           Proof-of-Concept
        Remediation Level -        Official-Fix   
        Report Confidence -        Confirmed     
      
      
      Impact
      ======
      
      Successful exploitation of the vulnerability may result in a restart of
      the device or remote code execution. Repeated exploitation may result
      in an extended denial of service (DoS) condition.
      
      Software Versions and Fixes
      ===========================
      
      When considering software upgrades, also consult 
      http://www.cisco.com/go/psirt and any subsequent advisories to 
      determine exposure and a complete upgrade solution.
      
      In all cases, customers should exercise caution to be certain the
      devices to be upgraded contain sufficient memory and that current
      hardware and software configurations will continue to be supported
      properly by the new release. If the information is not clear, contact
      the Cisco Technical Assistance Center ("TAC") or your contracted
      maintenance provider for assistance.
      
      Each row of the Cisco IOS software table (below) names a Cisco IOS
      release train. If a given release train is vulnerable, then the
      earliest possible releases that contain the fix (along with the
      anticipated date of availability for each, if applicable) are listed in
      the "First Fixed Release" column of the table. The "Recommended
      Release" column indicates the releases which have fixes for all the
      published vulnerabilities at the time of this Advisory. A device
      running a release in the given train that is earlier than the release
      in a specific column (less than the First Fixed Release) is known to be
      vulnerable. Cisco recommends upgrading to a release equal to or later
      than the release in the "Recommended Releases" column of the table.
      
      For further information about how Cisco IOS is built, numbered and
      maintained, please see the following URL: 
      http://www.cisco.com/warp/public/620/1.html.
      
      +-------------------------------------------------------------+
      |    Major    |       Availability of Repaired Releases       |
      |   Release   |                                               |
      |-------------+-----------------------------------------------|
      | Affected    |                             | Recommended     |
      | 12.0-Based  | First Fixed Release         | Release         |
      | Release     |                             |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0        | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0DA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0DB      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.0DC      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.0(32)S8; available       | 12.0(32)S8;     |
      | 12.0S       | 21-Aug-07                   | available       |
      |             |                             | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.0SC      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.0(32)S8;     |
      | 12.0SL      | 12.0(32)S8; available       | available       |
      |             | 21-Aug-07                   | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.0(32)S8;     |
      | 12.0SP      | 12.0(32)S8 available        | available       |
      |             | 21-Aug-07                   | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.0(32)S8;     |
      | 12.0ST      | 12.0(32)S8; available       | available       |
      |             | 21-Aug-07                   | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.0(32)S8;     |
      | 12.0SX      | 12.0(32)S8; available       | available       |
      |             | 21-Aug-07                   | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | 12.0(32)SY4; available      | 12.0(32)SY4;    |
      | 12.0SY      | 21-Aug-07                   | available       |
      |             |                             | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  |                 |
      | 12.0SZ      | 12.0(32)S8; available       |                 |
      |             | 21-Aug-07                   |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0T       | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0W       | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0WC      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0WT      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XA      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XB      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XC      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XD      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  |                 |
      | 12.0XE      | 12.1(27b)E3; available      |                 |
      |             | 10-Aug-07                   |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XF      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XG      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XH      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XI      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XJ      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XK      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XL      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XM      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XN      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XQ      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XR      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XS      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XV      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.0XW      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | Affected    |                             | Recommended     |
      | 12.1-Based  | First Fixed Release         | Release         |
      | Release     |                             |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1        | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1AA      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1AX      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1AY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1AZ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1CX      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(10)DA8                 | 12.2(10)DA8     |
      | 12.1DA      |                             |                 |
      |             | 12.2(12)DA12                | 12.2(12)DA12    |
      |-------------+-----------------------------+-----------------|
      | 12.1DB      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.1DC      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.1E       | 12.1(27b)E3; available      |                 |
      |             | 5-Mar-08                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1EA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1EB      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.1EC      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      | 12.1EO      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1EU      | Vulnerable; first fixed in  | 12.2(25)EWA10   |
      |             | 12.2(25)EWA10               |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1EV      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | All Cat4K       |
      |             |                             | platforms:      |
      |             |                             |                 |
      |             |                             | 12.2(25)EWA10   |
      |             |                             |                 |
      | 12.1EW      | Vulnerable; first fixed in  | 12.2(31)SGA3    |
      |             | 12.2(25)EWA10               |                 |
      |             |                             | 12.2(37)SG1     |
      |             |                             |                 |
      |             |                             | 12.2(40)SG;     |
      |             |                             | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  |                 |
      | 12.1EX      | 12.1(27b)E3; available      |                 |
      |             | 5-Mar-08                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1EY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  |                 |
      | 12.1EZ      | 12.1(27b)E3; available      |                 |
      |             | 5-Mar-08                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1GA      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1GB      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1T       | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XA      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XB      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XC      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XD      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XE      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XF      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XG      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XH      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XI      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XJ      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XK      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XL      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XM      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XN      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XO      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XP      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XQ      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XR      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XS      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XT      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XU      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1XV      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1XW      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XX      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XY      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1XZ      | Vulnerable; first fixed in  | 12.2(46a)       |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YA      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YB      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1YC      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YD      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YE      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YF      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1YG      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.1YH      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.1YI      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.1YJ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | Affected    |                             | Recommended     |
      | 12.2-Based  | First Fixed Release         | Release         |
      | Release     |                             |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(26c); available        |                 |
      |             | 14-Aug-07                   |                 |
      |             |                             |                 |
      |             | 12.2(27c); available        |                 |
      |             | 14-Aug-07                   |                 |
      |             |                             |                 |
      | 12.2        | 12.2(28d); available        | 12.2(46a)       |
      |             | 14-Aug-07                   |                 |
      |             |                             |                 |
      |             | 12.2(29b); available        |                 |
      |             | 14-Aug-07                   |                 |
      |             |                             |                 |
      |             | 12.2(46)                    |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2B       | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.2BC      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2BW      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2BY      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(7)XI10a;   |
      | 12.2BZ      | 12.3(7)XI10a available      | available       |
      |             | 21-Aug-07                   | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.2CX      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.2CY      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      | 12.2CZ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(10)DA8                 | 12.2(10)DA8     |
      | 12.2DA      |                             |                 |
      |             | 12.2(12)DA12                | 12.2(12)DA12    |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2DD      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2DX      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | All Cat4K       |
      |             |                             | platforms:      |
      |             |                             |                 |
      |             |                             | 12.2(25)EWA10   |
      |             |                             |                 |
      | 12.2EU      | Vulnerable; first fixed in  | 12.2(31)SGA3    |
      |             | 12.2(25)EWA10               |                 |
      |             |                             | 12.2(37)SG1     |
      |             |                             |                 |
      |             |                             | 12.2(40)SG;     |
      |             |                             | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      |             |                             | All Cat4K       |
      |             |                             | platforms:      |
      |             |                             |                 |
      |             |                             | 12.2(25)EWA10   |
      |             |                             |                 |
      | 12.2EW      | Vulnerable; first fixed in  | 12.2(31)SGA3    |
      |             | 12.2(25)EWA10               |                 |
      |             |                             | 12.2(37)SG1     |
      |             |                             |                 |
      |             |                             | 12.2(40)SG;     |
      |             |                             | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      |             |                             | All Cat4K       |
      |             |                             | platforms:      |
      |             |                             |                 |
      |             |                             | 12.2(25)EWA10   |
      |             |                             |                 |
      | 12.2EWA     | 12.2(25)EWA10               | 12.2(31)SGA3    |
      |             |                             |                 |
      |             |                             | 12.2(37)SG1     |
      |             |                             |                 |
      |             |                             | 12.2(40)SG;     |
      |             |                             | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      | 12.2EX      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2EY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2EZ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2FX      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2FY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2FZ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2IXA     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2IXB     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2IXC     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2IXD     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2IXE     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2JA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2JK      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2MB      | Vulnerable; first fixed in  | 12.2(25)SW11    |
      |             | 12.2(25)SW11                |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(15)MC2h                |                 |
      | 12.2MC      |                             | 12.2(15)MC2j    |
      |             | 12.2(15)MC2j                |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(14)S19                 |                 |
      |             |                             |                 |
      |             | 12.2(18)S13                 | 12.2(25)S13     |
      | 12.2S       |                             |                 |
      |             | 12.2(20)S14                 | 12.2(14)S19     |
      |             |                             |                 |
      |             | 12.2(25)S13                 |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.2(28)SB9;    |
      |             | 12.2(28)SB9                 | available       |
      | 12.2SB      |                             | 15-Aug-07       |
      |             | 12.2(31)SB6                 |                 |
      |             |                             | 12.2(31)SB6     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.2(28)SB9;    |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2SBC     | 12.2(31)SB6                 | 15-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.2(31)SB6     |
      |-------------+-----------------------------+-----------------|
      | 12.2SE      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEA     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEB     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEC     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SED     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEE     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEF     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SEG     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(25)SG2; available      | All Cat4K       |
      |             | 13-Aug-07                   | platforms:      |
      |             |                             |                 |
      |             | 12.2(31)SG2; available      | 12.2(25)SG2     |
      |             | 13-Aug-07                   |                 |
      | 12.2SG      |                             | 12.2(37)SG1     |
      |             | 12.2(37)SG1; available      |                 |
      |             | 13-Aug-07                   | 12.2(31)SG2     |
      |             |                             |                 |
      |             | 12.2(40)SG; available       | 12.2(40)SG;     |
      |             | 24-Oct-07                   | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      |             |                             | All Cat4K       |
      |             |                             | platforms:      |
      |             |                             |                 |
      |             | 12.2(31)SGA3                | 12.2(31)SGA3    |
      | 12.2SGA     |                             |                 |
      |             | 12.2(31)SGA4; available     | 12.2(37)SG1     |
      |             | 15-Oct-07                   |                 |
      |             |                             | 12.2(40)SG;     |
      |             |                             | available       |
      |             |                             | Oct-07          |
      |-------------+-----------------------------+-----------------|
      | 12.2SL      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(29)SM2; available      | 12.2(29)SM2;    |
      | 12.2SM      | 22-Aug-07                   | available       |
      |             |                             | 10-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2SO      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SRA     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SRB     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2SU      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.2(29)SV4; available      | 12.2(29)SV4;    |
      | 12.2SV      | 14-Oct-07                   | available       |
      |             |                             | 14-Oct-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2SVA     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SVC     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SW      | 12.2(25)SW11                | 12.2(25)SW11    |
      |-------------+-----------------------------+-----------------|
      | 12.2SX      | Vulnerable; first fixed in  |                 |
      |             | 12.2(18)SXE4                |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SXA     | Vulnerable; first fixed in  |                 |
      |             | 12.2(18)SXE4                |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SXB     | Vulnerable; first fixed in  | 12.2(18)SXF10   |
      |             | 12.2(18)SXE4                |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SXD     | Vulnerable; contact TAC     |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SXE     | 12.2(18)SXE4                | 12.2(18)SXF10   |
      |-------------+-----------------------------+-----------------|
      | 12.2SXF     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SXH     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2SY      | Vulnerable; first fixed in  |                 |
      |             | 12.2(18)SXE4                |                 |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.2(25)S13     |
      | 12.2SZ      | 12.2(25)S13                 |                 |
      |             |                             | 12.2(14)S19     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2T       | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2TPC     | 12.2(8)TPC10c; available    | 12.2(8)TPC10c   |
      |             | 17-Aug-07                   |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.2(28)SB9;    |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2UZ      | 12.2(31)SB6                 | 15-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.2(31)SB6     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.2(28)SB9;    |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2VZ      | 12.2(31)SB6                 | 15-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.2(31)SB6     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XA      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XB      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2XC      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XD      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2XE      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(17b)BC8    |
      | 12.2XF      | 12.3(17a)BC                 |                 |
      |             |                             | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XG      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XH      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2XI      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XJ      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XK      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XL      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XM      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XN      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XQ      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             |                             |                 |
      | 12.2XR      | 12.3(2)JA3                  | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XS      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XT      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XU      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XV      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2XW      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YA      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YB      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YC      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YD      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.2(25)S13     |
      | 12.2YE      | 12.2(25)S13                 |                 |
      |             |                             | 12.2(14)S19     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YF      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2YG      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YH      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YJ      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2YK      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YL      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YM      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YN      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.2YO      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YP      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YQ      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YR      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.2YS      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2YT      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YU      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YV      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YW      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YX      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2YY      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.2(25)S13     |
      | 12.2YZ      | 12.2(25)S13                 |                 |
      |             |                             | 12.2(14)S19     |
      |-------------+-----------------------------+-----------------|
      | 12.2ZA      | Vulnerable; first fixed in  |                 |
      |             | 12.2(18)SXE4                |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2ZB      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.2ZC      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZD      | Vulnerable; contact TAC     |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             |                             | 12.3(20a)       |
      |             |                             |                 |
      |             |                             | 12.3(21b)       |
      |             |                             |                 |
      |             |                             | 12.3(22a)       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.2ZE      | 12.3(17a)                   | 12.3(18a)       |
      |             |                             |                 |
      |             |                             | 12.3(19a);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2ZF      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(2)XA6      |
      |             |                             |                 |
      | 12.2ZG      | Vulnerable; contact TAC     | 12.3(8)YG6;     |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.2ZH      | Vulnerable; contact TAC     | 12.2(13)ZH9     |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.2ZJ      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable, first fixed in  |                 |
      |             | 12.3(14)T5 for the Cisco    |                 |
      |             | 17xx;                       |                 |
      |             |                             |                 |
      | 12.2ZL      | first fixed in 12.4(1c) for |                 |
      |             | the Cisco 3200;             |                 |
      |             |                             |                 |
      |             | first fixed in 12.3(7)XR7,  |                 |
      |             | available 13-Aug-07 for the |                 |
      |             | ICS7750                     |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZP      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZR      | Vulnerable; contact TAC     |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZU      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZW      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.2ZY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | Affected    |                             | Recommended     |
      | 12.3-Based  | First Fixed Release         | Release         |
      | Release     |                             |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(23)        |
      |             |                             |                 |
      |             | 12.3(17a)                   | 12.3(20a)       |
      |             |                             |                 |
      |             | 12.3(18)                    | 12.3(21b)       |
      |             |                             |                 |
      |             | 12.3(19)                    | 12.3(22a)       |
      |             |                             |                 |
      | 12.3        | 12.3(20)                    | 12.3(18a)       |
      |             |                             |                 |
      |             | 12.3(21)                    | 12.3(19a);      |
      |             |                             | available       |
      |             | 12.3(22)                    | 16-Aug-07       |
      |             |                             |                 |
      |             | 12.3(23)                    | 12.3(17c);      |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3B       | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(17a)BC                 | 12.3(17b)BC8    |
      | 12.3BC      |                             |                 |
      |             | 12.3(21)BC                  | 12.3(21a)BC3    |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3BW      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.3EU      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JEA     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JEB     | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JK      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JL      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3JX      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             | Limited platform support is |                 |
      |             | available                   | 12.4(8d);       |
      |             |                             | available       |
      | 12.3T       | 12.3(11)T12; available      | 03-Sep-07       |
      |             | 16-Aug-07                   |                 |
      |             |                             | 12.4(7f)        |
      |             | 12.3(14)T5                  |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(4)TPC11b; available    | 12.3(4)TPC11b;  |
      | 12.3TPC     | 17-Aug-07                   | available       |
      |             |                             | 17-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.3VA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.3XA      | 12.3(2)XA6                  | 12.3(2)XA6      |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XB      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.3XC      | 12.3(2)XC5                  | 12.3(2)XC5      |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XD      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.3XE      | 12.3(2)XE5; available       | 12.3(2)XE5      |
      |             | 17-Aug-07                   |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XF      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             |                             | available       |
      | 12.3XG      | Vulnerable; contact TAC     | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XH      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(7)XI10a; available     | 12.3(7)XI10a;   |
      | 12.3XI      | 21-Aug-07                   | available       |
      |             |                             | 21-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(14)YX9;    |
      | 12.3XJ      | 12.3(14)YX8                 | available       |
      |             |                             | 13-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XK      | 12.3(14)T5                  | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XQ      | 12.4(1c)                    | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(7)XR7; available       | 12.3(7)XR7;     |
      | 12.3XR      | 17-Aug-07                   | available       |
      |             |                             | 17-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XS      | 12.4(1c)                    | 03-Sep-07       |
      |             |                             |                 |
      |             |                             | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3XU      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(14)YX9;    |
      | 12.3XW      | 12.3(14)YX8                 | available       |
      |             |                             | 13-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.3XY      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(12c)       |
      |             |                             |                 |
      |             |                             | 12.4(3h)        |
      |             |                             |                 |
      |             |                             | 12.4(5c)        |
      |             |                             |                 |
      |             |                             | 12.4(8d);       |
      |             |                             | available       |
      |             |                             | 03-Sep-07       |
      |             | Vulnerable; first fixed in  |                 |
      | 12.3YA      | 12.4(1c)                    | 12.4(7f)        |
      |             |                             |                 |
      |             |                             | 12.4(16)        |
      |             |                             |                 |
      |             |                             | 12.4(10c)       |
      |             |                             |                 |
      |             |                             | 12.4(13d)       |
      |             |                             |                 |
      |             |                             | 12.3(8)YG6;     |
      |             |                             | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YD      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.3(14)YX9;    |
      | 12.3YF      | 12.3(14)YX8                 | available       |
      |             |                             | 13-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(8)YG6; available       | 12.3(8)YG6;     |
      | 12.3YG      | 16-Aug-07                   | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YH      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YI      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YJ      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(11)YK3; available      | 12.3(11)YK3;    |
      | 12.3YK      | 20-Aug-07                   | available       |
      |             |                             | 20-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(14)YM11;   |
      | 12.3YM      | 12.3(14)YM5                 | available       |
      |             |                             | 23-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YQ      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      | 12.3YS      | 12.3(11)YS2; available      | 12.3(11)YS2     |
      |             | 17-Aug-07                   |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             |                             | available       |
      |             |                             | 24-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(2)T6;      |
      |             | Vulnerable; first fixed in  | available       |
      | 12.3YT      | 12.4(4)T                    | 20-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(4)T8;      |
      |             |                             | available       |
      |             |                             | 28-Aug-07       |
      |             |                             |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      |             | Vulnerable; first fixed in  | 12.4(2)XB6;     |
      | 12.3YU      | 12.4(2)XB6 available        | available       |
      |             | 16-Aug-07                   | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.3(14)YX9;    |
      | 12.3YX      | 12.3(14)YX8                 | available       |
      |             |                             | 13-Aug-07       |
      |-------------+-----------------------------+-----------------|
      |             | 12.3(11)YZ2; available      | 12.3(11)YZ2;    |
      | 12.3YZ      | 17-Aug-07                   | available       |
      |             |                             | 17-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | Affected    |                             | Recommended     |
      | 12.4-Based  | First Fixed Release         | Release         |
      | Release     |                             |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.4(1c)                    | 12.4(12c)       |
      |             |                             |                 |
      |             | 12.4(10)                    | 12.4(3h)        |
      |             |                             |                 |
      |             | 12.4(12)                    | 12.4(5c)        |
      |             |                             |                 |
      |             | 12.4(13)                    | 12.4(8d);       |
      |             |                             | available       |
      | 12.4        | 12.4(16)                    | 03-Sep-07       |
      |             |                             |                 |
      |             | 12.4(3b)                    | 12.4(7f)        |
      |             |                             |                 |
      |             | 12.4(5)                     | 12.4(16)        |
      |             |                             |                 |
      |             | 12.4(7)                     | 12.4(10c)       |
      |             |                             |                 |
      |             | 12.4(8)                     | 12.4(13d)       |
      |-------------+-----------------------------+-----------------|
      | 12.4JA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4JX      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4MD      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.4(12)MR1                 |                 |
      |             |                             |                 |
      |             | 12.4(11)MR                  |                 |
      |             |                             |                 |
      |             | 12.4(12)MR                  |                 |
      |             |                             |                 |
      | 12.4MR      | 12.4(12)MR2; available      | 12.4(12)MR2     |
      |             | 14-Aug-07                   |                 |
      |             |                             |                 |
      |             | 12.4(4)MR                   |                 |
      |             |                             |                 |
      |             | 12.4(6)MR                   |                 |
      |             |                             |                 |
      |             | 12.4(9)MR                   |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4SW      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             |                             | 12.4(11)T3      |
      |             |                             |                 |
      |             |                             | 12.4(9)T5;      |
      |             | 12.4(11)T                   | available       |
      |             |                             | 24-Aug-07       |
      |             | 12.4(15)T                   |                 |
      |             |                             | 12.4(2)T6;      |
      |             | 12.4(2)T3                   | available       |
      | 12.4T       |                             | 20-Aug-07       |
      |             | 12.4(4)T                    |                 |
      |             |                             | 12.4(4)T8;      |
      |             | 12.4(6)T                    | available       |
      |             |                             | 28-Aug-07       |
      |             | 12.4(9)T                    |                 |
      |             |                             | 12.4(6)T8       |
      |             |                             |                 |
      |             |                             | 12.4(15)T1      |
      |-------------+-----------------------------+-----------------|
      | 12.4XA      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      |             | 12.4(2)XB6; available       | 12.4(2)XB6;     |
      | 12.4XB      | 16-Aug-07                   | available       |
      |             |                             | 16-Aug-07       |
      |-------------+-----------------------------+-----------------|
      | 12.4XC      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XD      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XE      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XF      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XG      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XJ      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XK      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XT      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XV      | Not Vulnerable              |                 |
      |-------------+-----------------------------+-----------------|
      | 12.4XW      | Not Vulnerable              |                 |
      +-------------------------------------------------------------+
      
      Workarounds
      ===========
      
      Customers who do not need NHRP functionality may disable the NHRP
      service and eliminate the exposure to this vulnerability.
      
      For customers who require NHRP functionality, this section provides
      some workarounds to help reduce exposure.
      
      If NHRP is required, the only complete resolution to this issue is to
      upgrade to a fixed version of software.
      
      Additional mitigations that can be deployed on Cisco devices within the
      network are discussed in the Cisco Applied Intelligence companion
      document for this advisory, which is available at the following link:
      
      http://www.cisco.com/warp/public/707/cisco-air-20070808-nhrp.shtml
      
      Because this attack can be sent from spoofed source addresses,
      anti-spoofing techniques are required for the workarounds in this
      section to be most effective.
      
      Infrastructure ACLs
      +------------------
      
      Although it is often difficult to block traffic transiting the network,
      it is possible to identify traffic that should never be allowed to
      target infrastructure devices and block that traffic at the border of
      the network. Infrastructure ACLs are considered a network security best
      practice and should be considered as a long-term addition to good
      network security as well as a workaround for this specific
      vulnerability. The following ACL example should be included as part of
      the deployed infrastructure access list that will protect all devices
      with IP addresses in the infrastructure IP address range.
      
      
          !--- Permit NHRP/GRE services from trusted hosts destined
          !--- to infrastructure addresses.
      
      
          access-list 150 permit 47 TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK
          access-list 150 permit 54 TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK
      
      
          !--- Deny NHRP/GRE packets from all other sources destined 
          !--- to infrastructure addresses.
      
      
          access-list 150 deny   47 any INFRASTRUCTURE_ADDRESSES MASK
          access-list 150 deny   54 any INFRASTRUCTURE_ADDRESSES MASK
      
      
          !--- Permit all other traffic to transit the device.
      
      
          access-list 150 permit IP any any
      
          interface serial 2/0
            ip access-group 150 in
      
      
      The white paper entitled "Protecting Your Core: Infrastructure
      Protection Access Control Lists" presents guidelines and recommended
      deployment techniques for infrastructure protection access lists. This
      white paper is on the web at
      
      http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801a1a55.shtml
      
      Control Plane Policing
      +---------------------
      
      Control Plane Policing (CoPP) can be used to block untrusted NHRP (IP
      protocol number 54) and GRE (IP protocol number 47) access to the
      affected device. Cisco IOS Software releases 12.0S, 12.2SX, 12.2S,
      12.3T, 12.4, and 12.4T support the CoPP feature. Administrators can
      configure CoPP on a device to help protect the management and control
      planes. Configuring CoPP can minimize the risk and effectiveness of
      direct infrastructure attacks by explicitly permitting only authorized
      traffic sent to infrastructure devices in accordance with existing
      security policies and configurations. Administrators can adapt the
      following example to their networks.
      
      
          !--- Deny NHRP (IP protocol number 54) and GRE (IP protocol number 47)
          !--- traffic from trusted hosts to all IP addresses configured
          !--- on all interfaces of the affected device so that it will
          !--- be allowed by the CoPP feature.
          !
      
          access-list 111 deny   54 TRUSTED_ADDRESSES MASK any
          access-list 111 deny   47 TRUSTED_ADDRESSES MASK any
      
          !
          !--- Permit all other NHRP (IP protocol number 54) and GRE (IP protocol
          !--- number 47) traffic sent to all IP addresses configured on
          !--- all interfaces of the affected device so that it will be
          !--- policed and dropped by the CoPP feature.
          !
      
          access-list 111 permit 54 any any
          access-list 111 permit 47 any any
      
          !
          !--- Permit (Police or Drop)/Deny (Allow) all other Layer3
          !--- and Layer4 traffic in accordance with existing security
          !--- policies and configurations for traffic that is authorized
          !--- to be sent to infrastructure devices.
          !
          !--- Create a class map for traffic to be policed by the CoPP
          !--- feature.
          !
      
          class-map match-all drop-NHRP-class
            match access-group 111
      
          !
          !--- Create a policy map that will be applied to the control plane
          !--- of the affected device.
          !
      
          policy-map drop-NHRP-traffic
            class drop-NHRP-class
              drop
      
          !
          !--- Apply the policy map to the control plane of the device
          !--- device.
          !
      
          control-plane
            service-policy input drop-NHRP-traffic
          !
      
      
      In the preceding CoPP example, the access control list entries (ACEs)
      that match the potential exploit packets with the "permit" action
      result in the discarding of these packets by the policy-map "drop"
      function, whereas packets that match the "deny" action (not shown) are
      not affected by the policy-map drop function. Please note that in the
      12.2S and 12.0S Cisco IOS Software trains, the policy-map syntax is
      different:
      
          policy-map drop-NHRP-traffic
           class drop-NHRP-class
            police 32000 1500 1500 conform-action drop exceed-action drop
      
      
      Additional information on the configuration and use of the CoPP feature
      is on the web at
      
      http://www.cisco.com/en/US/products/ps6642/products_white_paper0900aecd804fa16a.shtml
      
      and
      
      http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/products_feature_guide09186a008052446b.html
      
      Obtaining Fixed Software
      ========================
      
      Cisco will make free software available to address this vulnerability
      for affected customers. This advisory will be updated as fixed software
      becomes available. Prior to deploying software, customers should
      consult their maintenance provider or check the software for feature
      set compatibility and known issues specific to their environment.
      
      Customers may only install and expect support for the feature sets they
      have purchased. By installing, downloading, accessing or otherwise
      using such software upgrades, customers agree to be bound by the terms
      of Cisco's software license terms found at 
      http://www.cisco.com/public/sw-license-agreement.html, or as otherwise 
      set forth at Cisco.com Downloads at 
      http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
      
      Do not contact either "psirt at cisco dot com" or "security-alert at cisco dot com"
      for software upgrades.
      
      Customers with Service Contracts
      +-------------------------------
      
      Customers with contracts should obtain upgraded software through their
      regular update channels. For most customers, this means that upgrades
      should be obtained through the Software Center on Cisco's worldwide
      website at http://www.cisco.com.
      
      Customers using Third Party Support Organizations
      +------------------------------------------------
      
      Customers whose Cisco products are provided or maintained through prior
      or existing agreement with third-party support organizations such as
      Cisco Partners, authorized resellers, or service providers should
      contact that support organization for guidance and assistance with the
      appropriate course of action in regards to this advisory.
      
      The effectiveness of any workaround or fix is dependent on specific
      customer situations such as product mix, network topology, traffic
      behavior, and organizational mission. Due to the variety of affected
      products and releases, customers should consult with their service
      provider or support organization to ensure any applied workaround or
      fix is the most appropriate for use in the intended network before it
      is deployed.
      
      Customers without Service Contracts
      +----------------------------------
      
      Customers who purchase direct from Cisco but who do not hold a Cisco
      service contract and customers who purchase through third-party vendors
      but are unsuccessful at obtaining fixed software through their point of
      sale should get their upgrades by contacting the Cisco Technical
      Assistance Center (TAC). TAC contacts are as follows.
      
        * +1 800 553 2447 (toll free from within North America)
        * +1 408 526 7209 (toll call from anywhere in the world)
        * e-mail: tac at cisco dot com
      
      Have your product serial number available and give the URL of this
      notice as evidence of your entitlement to a free upgrade. Free upgrades
      for non-contract customers must be requested through the TAC.
      
      Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
      for additional TAC contact information, including special localized
      telephone numbers and instructions and e-mail addresses for use in
      various languages.
      
      Exploitation and Public Announcements
      =====================================
      
      The Cisco PSIRT is not aware of any public announcements or malicious
      use of the vulnerability described in this advisory.
      
      This vulnerability was reported to Cisco by Martin Kluge.
      
      Status of this Notice: Interim
      ==============================
      
      THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY
      KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF
      MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE
      INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT
      YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS
      DOCUMENT AT ANY TIME. CISCO EXPECTS TO UPDATE THIS DOCUMENT AS NEW
      INFORMATION BECOMES AVAILABLE.
      
      A stand-alone copy or Paraphrase of the text of this document that
      omits the distribution URL in the following section is an uncontrolled
      copy, and may lack important information or contain factual errors.
      
      Distribution
      ============
      
      This advisory is posted on Cisco's worldwide website at:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml
      
      In addition to worldwide web posting, a text version of this notice is
      clear-signed with the Cisco PSIRT PGP key and is posted to the
      following e-mail and Usenet news recipients.
      
        * cust-security-announce at cisco dot com
        * first-teams at first dot org
        * bugtraq at securityfocus dot com
        * vulnwatch at vulnwatch dot org
        * cisco at spot dot colorado dot edu
        * cisco-nsp at puck dot nether dot net
        * full-disclosure at lists.grok dot org dot uk
        * comp.dcom.sys.cisco at newsgate dot cisco dot com
      
      Future updates of this advisory, if any, will be placed on Cisco's
      worldwide website, but may or may not be actively announced on mailing
      lists or newsgroups. Users concerned about this problem are encouraged
      to check the above URL for any updates.
      
      Revision History
      
      +-------------------------------------------------------------+
      | Revision 1.0  | 2007-August-08   | Initial public release    |
      +-------------------------------------------------------------+
      
      Cisco Security Procedures
      
      Complete information on reporting security vulnerabilities in Cisco
      products, obtaining assistance with security incidents, and registering
      to receive security information from Cisco, is available on Cisco's
      worldwide website at 
      http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html.
      This includes instructions for press inquiries regarding Cisco security 
      notices. All Cisco security advisories are available at 
      http://www.cisco.com/go/psirt.
      
      - -----------------------------------------------------------------------
      
      All contents are Copyright 2006-2007 Cisco Systems, Inc. All rights
      reserved. 
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