[apops] Cisco Security Advisory: Cisco IOS Information Leakage Using IPv

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Information Leakage Using IPv6 Routing Header
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Wed, 8 Aug 2007 13:00:32 -0400
  • Cc: psirt at cisco dot com
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    • -----BEGIN PGP SIGNED MESSAGE-----
      Hash: SHA1
      
      
      Cisco Security Advisory: 
      Cisco IOS Information Leakage Using IPv6 Routing Header
      
      Advisory ID: cisco-sa-20070808-IOS-IPv6-leak
      
      http://www.cisco.com/warp/public/707/cisco-sa-20070808-IOS-IPv6-leak.shtml
      
      Revision 1.0
      
      For Public Release 2007 August 08 1600 UTC (GMT)
      
      - -----------------------------------------------------------------------
      
      Summary
      =======
      
      Cisco IOS and Cisco IOS XR contain a vulnerability when processing
      specially crafted IPv6 packets with a Type 0 Routing Header present.
      Exploitation of this vulnerability can lead to information leakage on
      affected IOS and IOS XR devices, and may also result in a crash of the
      affected IOS device. Successful exploitation on an affected device
      running Cisco IOS XR will not result in a crash of the device itself,
      but may result in a crash of the IPv6 subsystem.
      
      Cisco has made free software available to address this vulnerability
      for affected customers. There are workarounds available to mitigate the
      effects of the vulnerability.
      
      This advisory is posted at 
      http://www.cisco.com/warp/public/707/cisco-sa-20070808-IOS-IPv6-leak.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
      +------------------
      
      This vulnerability affects devices that are configured to use the IPv6
      protocol and are running affected versions of one of the following
      types of software:
      
        * Cisco IOS
        * Cisco IOS XR
      
      To determine the software running on a Cisco IOS product, log in to the
      device and issue the show version command to display the system banner.
      Cisco IOS software will identify itself as "Internetwork Operating
      System Software" or simply "IOS." On the next line of output, the image
      name will be displayed between parentheses, followed by "Version" and
      the Cisco IOS release name. Other Cisco devices will not have the show
      version command, or will give different output.
      
      The following example shows output from a device running an IOS image:
      
          Router>show version
          Cisco IOS Software, 7200 Software (C7200-IK9S-M), Version 12.3(14)T1, RELEASE SOFTWARE (fc1)
          Technical Support: http://www.cisco.com/techsupport
          Copyright (c) 1986-2005 by Cisco Systems, Inc.
          Compiled Thu 31-Mar-05 08:04 by yiyan
      
      
      Additional information about Cisco IOS release naming is available at
      the following link: 
      http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_paper09186a008018305e.shtml.
      
      To determine whether IPv6 is configured on an IOS device, look for the
      lines containing ipv6 in the Cisco IOS configuration, as shown in the
      following example:
      
          Router#show running-config | include ipv6
          ipv6 address 2001:0DB8:C18:1::/64 eui-64
      
      
      If the configuration contains a line or lines similar to the above
      example, IPv6 is configured on the device. The exact IPv6 address will
      vary in your configuration.
      
      To determine whether IPv6 is configured on an IOS XR device, look for
      the following lines in in the Cisco IOS XR configuration:
      
          Router-IOS_XR#show ipv6 interface | include IPv6
          IPv6 is enabled, link-local address is fe80::216:47ff:fee1:d987
          IPv6 is disabled, link-local address unassigned
          IPv6 is disabled, link-local address unassigned
      
      
      If the output contains at least one line that reads IPv6 is enabled,
      IPv6 is configured on the device.
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
      No other Cisco products are currently known to be affected by this
      vulnerability. In particular, the following devices are known not to be
      affected:
      
        * Cisco PIX and ASA Appliances
        * Cisco Firewall Services Module (FWSM)
        * Cisco MDS
      
      Cisco PIX, ASA, and FWSM firewall products do not process packets
      containing IPv6 Routing headers. All such packets will be silently
      dropped.
      
      Details
      =======
      
      Successful exploitation of the vulnerability described in this document
      may result in swapping memory between the destination IPv6 address in
      the IPv6 packet header and 16 bytes from the packet buffer memory.
      Memory that can be accessed through this vulnerability can not be
      further than 1500 bytes from the packet header start.
      
      This vulnerability is documented for Cisco IOS as Cisco Bug ID
      CSCef77013 and for Cisco IOS XR as Cisco Bug ID CSCsi74127. 
      
      Vulnerability Scoring Details
      +----------------------------
      
      Cisco is providing scores for the vulnerabilities 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 an 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.
      
      CSCef77013 - Tighter parameter checking for IPv6
      
      CVSS Base Score - 8
        Access Vector -            Remote
        Access Complexity -        Low
        Authentication -           Not Required
        Confidentiality Impact -   Partial
        Integrity Impact -         Partial
        Availability Impact -      Complete
        Impact Bias -              Normal
      
      CVSS Temporal Score - 6.6
        Exploitability -           Functional
        Remediation Level -        Official-Fix
        Report Confidence -        Confirmed
      
      
      CSCsi74127 - Processing of IPv6 headers
      
      CVSS Base Score - 7
        Access Vector -            Remote
        Access Complexity -        Low
        Authentication -           Not Required
        Confidentiality Impact -   Partial
        Integrity Impact -         Partial
        Availability Impact -      Partial
        Impact Bias -              Normal
      
      CVSS Temporal Score - 5.8
        Exploitability -           Functional
        Remediation Level -        Official-Fix
        Report Confidence -        Confirmed
      
      Impact
      ======
      
      Successful exploitation of this vulnerability may result in the
      swapping of memory between the destination IPv6 address field and
      packet buffer memory. This can lead to the leakage of data from the
      buffer memory in the form of an IPv6 destination address and, in a
      worst case scenario for devices running Cisco IOS, a complete crash of
      the IOS device.
      
      Note: Given that the destination IPv6 address will contain the contents
      of a buffer memory, the packet may not get routed outside of the local
      network. Depending on the exact destination address the packet may get
      dropped by the next router or on the targeted router itself if it does
      not have route to the newly formed IPv6 address.
      
      In the case of Cisco IOS XR, successful exploitation will not crash the
      whole device but only lead to a restart of the IPv6 subsystem.
      Successful repeated exploitation of this vulnerability may lead to a
      sustained denial of service (DoS) of all upper layer services that use
      IPv6 as the transport protocol but not the whole device.
      
      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         | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0DA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0DB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0DC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | 12.0(32)S8; available       | 12.0(32)S8;    |
      | 12.0S        | 21-Aug-07                   | available      |
      |              |                             | 21-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.0SC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0SL       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0SP       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | 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        | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0W        | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0WC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0WT       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XD       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XE       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XF       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XG       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XH       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XI       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XJ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XK       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XL       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XM       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XN       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XQ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XR       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XS       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XV       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.0XW       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | Affected     |                             | Recommended    |
      | 12.1-Based   | First Fixed Release         | Release        |
      | Release      |                             |                |
      |--------------+-----------------------------+----------------|
      | 12.1         | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1AA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1AX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1AY       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1AZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1CX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1DA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1DB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1DC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1E        | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EO       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EU       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EV       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EW       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EY       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1EZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1GA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1GB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1T        | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XD       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XE       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XF       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XG       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XH       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XI       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XJ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XK       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XL       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XM       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XN       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XO       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XP       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XQ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XR       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XS       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XT       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.1XU       | 12.3(15)                    | 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  |                |
      | 12.1XV       | 12.3(15)                    | 12.3(18a)      |
      |              |                             |                |
      |              |                             | 12.3(19a);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |              |                             |                |
      |              |                             | 12.3(17c);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.1XW       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XY       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1XZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.1YB       | 12.3(15)                    | 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  |                |
      | 12.1YC       | 12.3(15)                    | 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  |                |
      | 12.1YD       | 12.3(15)                    | 12.3(18a)      |
      |              |                             |                |
      |              |                             | 12.3(19a);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |              |                             |                |
      |              |                             | 12.3(17c);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.1YE       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YF       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YG       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YH       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YI       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.1YJ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | Affected     |                             | Recommended    |
      | 12.2-Based   | First Fixed Release         | Release        |
      | Release      |                             |                |
      |--------------+-----------------------------+----------------|
      | 12.2         | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2B        | 12.3(14)T                   | 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(15)                    | 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)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      | 12.2BZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.3(17b)BC8   |
      | 12.2CX       | 12.3(17a)BC                 |                |
      |              |                             | 12.3(21a)BC3   |
      |--------------+-----------------------------+----------------|
      | 12.2CY       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2CZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2DA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2DD       | 12.3(14)T                   | 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)T                   | 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              |                |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)SEE4;  |
      | 12.2EZ       | 12.2(25)SEE4                | available      |
      |              |                             | 07-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.2FX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2FY       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.2(40)SE;    |
      |              |                             | available      |
      |              | Vulnerable; first fixed in  | 24-Aug-07      |
      | 12.2FZ       | 12.2(35)SE                  |                |
      |              |                             | 12.2(37)SE1    |
      |              |                             |                |
      |              |                             | 12.2(35)SE5    |
      |--------------+-----------------------------+----------------|
      | 12.2IXA      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2IXB      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2IXC      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2IXD      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2JA       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2JK       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2MB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | 12.2(15)MC2h                |                |
      | 12.2MC       |                             | 12.2(15)MC2j   |
      |              | 12.2(15)MC2j                |                |
      |--------------+-----------------------------+----------------|
      |              | 12.2(14)S18                 |                |
      |              |                             |                |
      |              | 12.2(18)S13                 |                |
      |              |                             | 12.2(25)S13    |
      | 12.2S        | 12.2(20)S14                 |                |
      |              |                             | 12.2(14)S19    |
      |              | 12.2(25)S13                 |                |
      |              |                             |                |
      |              | 12.2(30)S                   |                |
      |--------------+-----------------------------+----------------|
      | 12.2SB       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SBC      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SE       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)SEE4;  |
      | 12.2SEA      | 12.2(25)SEE4                | available      |
      |              |                             | 07-Aug-07      |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)SEE4;  |
      | 12.2SEB      | 12.2(25)SEE4                | available      |
      |              |                             | 07-Aug-07      |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)SEE4;  |
      | 12.2SEC      | 12.2(25)SEE4                | available      |
      |              |                             | 07-Aug-07      |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)SEE4;  |
      | 12.2SED      | 12.2(25)SEE4                | available      |
      |              |                             | 07-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.2SEE      | 12.2(25)SEE4                | 12.2(25)SEE4   |
      |--------------+-----------------------------+----------------|
      | 12.2SEF      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SEG      | 12.2(25)SEG3                | 12.2(25)SEG3   |
      |--------------+-----------------------------+----------------|
      |              | 12.2(25)SG2; available      | All Cat4K      |
      |              | 13-Aug-07                   | platforms:     |
      |              |                             |                |
      |              | 12.2(31)SG1                 | 12.2(25)SG2    |
      |              |                             |                |
      | 12.2SG       | 12.2(31)SG                  | 12.2(37)SG1    |
      |              |                             |                |
      |              | 12.2(37)SG                  | 12.2(31)SG2    |
      |              |                             |                |
      |              | 12.2(40)SG; available       | 12.2(40)SG;    |
      |              | 24-Oct-07                   | available      |
      |              |                             | Oct-07         |
      |--------------+-----------------------------+----------------|
      | 12.2SGA      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SL       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SM       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 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)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      |              | 12.2(27)SV2                 |                |
      |              |                             |                |
      |              | 12.2(27)SV3                 |                |
      |              |                             |                |
      |              | 12.2(27)SV1                 |                |
      |              |                             | 12.2(29)SV4;   |
      | 12.2SV       | 12.2(28)SV1                 | available      |
      |              |                             | 14-Oct-07      |
      |              | 12.2(29)SV                  |                |
      |              |                             |                |
      |              | 12.2(29a)SV                 |                |
      |              |                             |                |
      |              | 12.2(29b)SV                 |                |
      |--------------+-----------------------------+----------------|
      | 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)SXE                 |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXA      | Vulnerable; first fixed in  |                |
      |              | 12.2(18)SXE                 |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXB      | Vulnerable; first fixed in  | 12.2(18)SXF10  |
      |              | 12.2(18)SXE                 |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXD      | Vulnerable; contact TAC     |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXE      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXF      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SXH      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2SY       | Vulnerable; first fixed in  |                |
      |              | 12.2(18)SXE                 |                |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable; first fixed in  | 12.2(25)S13    |
      | 12.2SZ       | 12.2(30)S                   |                |
      |              |                             | 12.2(14)S19    |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.2T        | 12.3(15)                    | 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                   |                |
      |--------------+-----------------------------+----------------|
      | 12.2UZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2VZ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.2XA       | 12.3(15)                    | 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(15)                    | 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)T                   | 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(15)                    | 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(15)                    | 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(15)                    | 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  |                |
      | 12.2XI       | 12.3(15)                    | 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  |                |
      | 12.2XJ       | 12.3(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 12.3(18a)      |
      |              |                             |                |
      |              |                             | 12.3(19a);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |              |                             |                |
      |              |                             | 12.3(17c);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.2XR       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2XS       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.2XT       | 12.3(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 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(15)                    | 12.3(18a)      |
      |              |                             |                |
      |              |                             | 12.3(19a);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |              |                             |                |
      |              |                             | 12.3(17c);     |
      |              |                             | available      |
      |              |                             | 16-Aug-07      |
      |--------------+-----------------------------+----------------|
      | 12.2YC       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2YD       | 12.3(14)T                   | 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(30)S                   |                |
      |              |                             | 12.2(14)S19    |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.3(23)       |
      |              |                             |                |
      |              |                             | 12.3(20a)      |
      |              |                             |                |
      |              |                             | 12.3(21b)      |
      |              |                             |                |
      |              |                             | 12.3(22a)      |
      |              | Vulnerable; first fixed in  |                |
      | 12.2YF       | 12.3(15)                    | 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(15)                    | 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(15)                    | 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)T                   | 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)T                   | 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)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      | 12.2YO       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2YP       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2YQ       | 12.3(14)T                   | 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)T                   | 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(15)                    | 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)T                   | 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)T                   | 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)T                   | 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)T                   | 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)T                   | 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(30)S                   |                |
      |              |                             | 12.2(14)S19    |
      |--------------+-----------------------------+----------------|
      | 12.2ZA       | Vulnerable; first fixed in  |                |
      |              | 12.2(18)SXE                 |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2ZB       | 12.3(14)T                   | 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(15)                    | 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)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      | 12.2ZG       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.2ZH       | 12.2(13)ZH9; available      | 12.2(13)ZH9    |
      |              | 17-Aug-07                   |                |
      |--------------+-----------------------------+----------------|
      |              |                             | 12.4(12c)      |
      |              |                             |                |
      |              |                             | 12.4(3h)       |
      |              |                             |                |
      |              |                             | 12.4(5c)       |
      |              |                             |                |
      |              |                             | 12.4(8d);      |
      |              | Vulnerable; first fixed in  | available      |
      | 12.2ZJ       | 12.3(14)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      |              | Vulnerable, first fixed in  |                |
      |              | 12.3(14)T for the Cisco     |                |
      |              | 17xx;                       |                |
      |              |                             |                |
      | 12.2ZL       | first fixed in 12.4(1) 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(15)                    | 12.3(23)       |
      |              |                             |                |
      |              | 12.3(16)                    | 12.3(20a)      |
      |              |                             |                |
      |              | 12.3(17a)                   | 12.3(21b)      |
      |              |                             |                |
      |              | 12.3(18)                    | 12.3(22a)      |
      |              |                             |                |
      | 12.3         | 12.3(19)                    | 12.3(18a)      |
      |              |                             |                |
      |              | 12.3(20)                    | 12.3(19a);     |
      |              |                             | available      |
      |              | 12.3(21)                    | 16-Aug-07      |
      |              |                             |                |
      |              | 12.3(22)                    | 12.3(17c);     |
      |              |                             | available      |
      |              | 12.3(23)                    | 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)T                   | 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)T                   | 03-Sep-07      |
      |              |                             |                |
      |              |                             | 12.4(7f)       |
      |              |                             |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      | 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)T                   |                |
      |              |                             | 12.4(16)       |
      |              |                             |                |
      |              |                             | 12.4(10c)      |
      |              |                             |                |
      |              |                             | 12.4(13d)      |
      |--------------+-----------------------------+----------------|
      | 12.3TPC      | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 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)T                   | 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)T                   | 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)T                   | 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)T                   | 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)YX                  | 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)T                   | 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(1)                     | 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(1)                     | 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(2)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)YX                  | 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(1)                     | 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(2)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)YX                  | 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(2)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(2)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       | 12.3(14)YQ                  | 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      |
      |--------------+-----------------------------+----------------|
      | 12.3YM       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.3YQ       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.3YS       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.3YT       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.3YU       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      | 12.3YX       | Not Vulnerable              |                |
      |--------------+-----------------------------+----------------|
      |              | 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      |                             |                |
      |-------------------------------------------------------------|
      | There are no affected 12.4 based releases                   |
      +-------------------------------------------------------------+
      
      Cisco IOS XR
      
      The following table lists fixed Cisco IOS XR software.
      
      +-------------------------------------------------------------+
      | Cisco IOS XR Version | SMU ID  |          SMU Name          |
      |----------------------+---------+----------------------------|
      | 3.2.3                | AA01920 | hfr-base-3.2.3.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.2.4                | AA01919 | hfr-base-3.2.4.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.2.6                | AA01918 | hfr-base-3.2.6.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.0                | AA01917 | hfr-base-3.3.0.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.1                | AA01916 | hfr-base-3.3.1.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.2                | AA01915 | hfr-base-3.3.2.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.3                | AA01914 | hfr-base-3.3.3.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.4                | AA01913 | hfr-base-3.3.4.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.4.0                | AA01912 | hfr-base-3.4.0.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.4.1                | AA01911 | hfr-base-3.4.1.CSCsi74127  |
      |----------------------+---------+----------------------------|
      | 3.3.1                | AA01910 | c12k-base-3.3.1.CSCsi74127 |
      |----------------------+---------+----------------------------|
      | 3.4.0                | AA01909 | c12k-base-3.4.0.CSCsi74127 |
      |----------------------+---------+----------------------------|
      | 3.4.1                | AA01908 | c12k-base-3.4.1.CSCsi74127 |
      +-------------------------------------------------------------+
      
      IOS XR Package Installation Envelopes (PIE) can be downloaded from File
      Exchange at: 
      https://upload.cisco.com/cgi-bin/swc/fileexg/main.cgi?CONTYPES=IOS-XR . 
      Installation instructions are included in the accompanying .txt files.
      
      Workarounds
      ===========
      
      The workaround consists of filtering packets that contain Type 0
      Routing header(s). Special attention must be paid not to filter packets
      with Type 2 Routing headers as that would break a Mobile IPv6
      deployment. Depending on which Cisco IOS software release is used, and
      if Mobile IPv6 is deployed, there are several potential workarounds.
      Because any packet type (TCP, UDP, ICMP) can be used to trigger this
      vulnerability, care must be taken when implementing a workaround to
      account for a spoofed IPv6 packet.
      
      For devices running Cisco IOS XR and have mobile IPv6 deployed, there
      is no workaround.
      
      For additional information about protection mechanisms against IPv6
      Routing headers, reference the "Countermeasures for the Malicious Use
      of IPv6 Type 0 Routing Headers" Applied Intelligence white paper,
      available at 
      http://www.cisco.com/web/about/security/intelligence/countermeasures-for-ipv6-type0-rh.html.
      
      Devices Running Cisco IOS
      +------------------------
      
      Control Plane Policing
      +---------------------
      
      The following example is applicable irrespectively if Mobile IPv6 is,
      or is not, deployed.
      
      Control Plane Policing (CoPP) can be used to block untrusted IPv6
      packets with Type 0 Routing Headers present 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. CoPP may be configured on a device to
      protect the management and control planes to 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. The following
      example can be adapted to your network.
      
      
          !-- Permit all IPv6 Routing Header Type 0 (Source Route) packets
          !-- sent to any IPv6 address configured on interfaces of the
          !-- affected device or IPv6 link-local addresses. This traffic
          !-- will be policed and dropped by the CoPP feature.
          !
      
          ipv6 access-list DENY-IPv6-RH0
           permit ipv6 any any routing-type 0
      
          !
          !-- 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-IPv6-RH0-class
            match access-group name DENY-IPv6-RH0
      
          !
          !-- Create a Policy-Map that will be applied to the Control-Plane of
          !-- the device.
      
          policy-map drop-IPv6-RH0-traffic
            class drop-IPv6-RH0-class
                  drop
      
          !
          !-- Apply the Policy-Map to the Control-Plane of the device.
      
          control-plane
            service-policy input drop-IPv6-RH0-traffic
      
          !
      
      
      In the above CoPP example, the access control list entries (ACEs),
      which match the potential exploit packets with the "permit" action,
      result in these packets being discarded by the policy-map "drop"
      function.
      
      Additional information on the configuration and use of the CoPP feature
      can be found 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.
      
      Mobile IPv6 is Not Deployed
      +--------------------------
      
      For IOS releases prior to 12.2(15)T, the workaround is to use ACLs to
      filter all packets that contain Routing headers. This method can not
      distinguish between Type 0 and Type 2 Routing headers, so it is not
      suitable if Mobile IPv6 is deployed.
      
      The following example shows how to configure such ACLs:
      
          Router(config)#ipv6 access-list deny-sourcerouted 
          Router(config-ipv6-acl)#deny ipv6 any <myaddress1> routing 
          Router(config-ipv6-acl)#deny ipv6 any <myaddress2> routing 
          Router(config-ipv6-acl)#permit ipv6 any any
      
          Router(config-ipv6-acl)#exit
          Router(config)#interface Ethernet0
          Router(config-if)#ipv6 traffic-filter deny-sourcerouted in
      
      
      
      In the above example <myaddressX> is an IPv6 address. One example of
      such an address is 2001:DB8:900D::1/64. The ACL must be applied to all
      interfaces and include all IPv6 addresses that are configured. If an
      interface has more than one IPv6 address configured then all addresses
      must be covered by the ACLs. This also includes all loopback and link
      local addresses for each interface.
      
      The alternative to enumerating all IPv6 addresses is to use the
      statement deny ipv6 any any routing. While that simplifies the
      resulting ACL, it will also filter all transit IPv6 traffic with
      Routing headers 0 and 2. The example in which all configured IPv6
      addresses are enumerated will not affect transit traffic. This is
      applicable to all other examples in this advisory.
      
      Starting from the IOS release 12.2(15)T, a new command, ipv6
      source-route was introduced. If applied, it will drop any IPv6 packet
      with Type 0 Routing Headers received by the device itself (for example,
      IPv6 destination address matches any of the IPv6 addresses configured
      on the device). The command does not affects transit traffic. The
      configuration is given in the following example:
      
          Router(config)#no ipv6 source-route 
      
      
      
      This is a global command and it applies to all interfaces. The command
      is applicable on all defined IPv6 addresses, including the link local
      and loopback address, and on all interfaces.
      
      Mobile IPv6 is Deployed
      +----------------------
      
      There is no workaround for devices running a Cisco IOS release prior to
      12.2(15)T. Starting from the IOS release 12.2(15)T, a new command, ipv6
      source-route was introduced. If applied, it will drop any IPv6 packet
      with Type 0 Routing Headers received by the device itself (for example,
      IPv6 destination address matches any of the IPv6 addresses configured
      on the device). The command does not affects transit traffic. The
      configuration is given in the following example:
      
          Router(config)#no ipv6 source-route
      
      
      
      This is a global command and it applies to all interfaces. The command
      is applicable on all defined IPv6 addresses, including the link local
      and loopback address, and on all interfaces.
      
      In IOS 12.4(2)T, a new keyword routing-type is added to IPv6 ACLs. It
      can be used to selectively permit or deny specific routing types.
      
          Router(config)#ipv6 access-list deny-sourcerouted
          Router(config-ipv6-acl)#deny ipv6 any <myaddress1> routing-type 0
          Router(config-ipv6-acl)#permit ipv6 any any
          Router(config)#interface Ethernet0
          Router(config-if)#ipv6 traffic-filter deny-sourcerouted in
      
      
      
      The above IPv6 ACL must be applied inbound on all interfaces on which
      an IPv6 address is configured.
      
      Devices Running Cisco IOS XR
      +---------------------------
      
      Mobile IPv6 is Not Deployed
      +--------------------------
      
      The workaround is to use ACLs to filter all packets that contain
      Routing headers. This method can not distinguish between Type 0 and
      Type 2 Routing headers, so it is not suitable if Mobile IPv6 is
      deployed.
      
      The following example shows how to configure such ACLs:
      
          Router-IOS_XR#configure terminal
          Router-IOS_XR(config)#ipv6 access-list deny-ipv6-type0-rh
          Router-IOS_XR(config-ipv6-acl)#deny ipv6 any host 2001:0DB8:12::3 routing
          Router-IOS_XR(config-ipv6-acl)#permit ipv6 any any
          Router-IOS_XR(config-ipv6-acl)#exit
          Router-IOS_XR(config)#interface GigabitEthernet 0/0/0/1
          Router-IOS_XR(config-if)#ipv6 access-group deny-ipv6-type0-rh ingress
          Router-IOS_XR(config-if)#end
      
      
      
      The ACL must be applied to all interfaces and include all IPv6
      addresses that are configured. If an interface has more than one IPv6
      address configured then all addresses must be covered by the ACLs. This
      also includes all loopback and link local addresses for each interface.
      
      Mobile IPv6 is Deployed
      +----------------------
      
      There is no workaround if Mobile IPv6 is deployed.
      
      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 initially rectified internally within Cisco
      during hardening IPv6 protocol. It was subsequently re-discovered and
      reported by Tom Cross from IBM Internet Security Systems X-Force.
      
      Status of This Notice: FINAL
      ============================
      
      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.
      
      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-IOS-IPv6-leak.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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