[apops] Cisco Security Advisory: Cisco IOS Software Session Initiation P

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability
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  • Date: Wed, 25 Mar 2009 17:00:00 +0100
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      Cisco Security Advisory: Cisco IOS Software Session Initiation
      Protocol Denial of Service Vulnerability
      
      Advisory ID: cisco-sa-20090325-sip
      
      http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml
      
      Revision 1.0
      
      For Public Release 2009 March 25 1600 UTC (GMT)
      
      - ---------------------------------------------------------------------
      
      Summary
      =======
      
      A vulnerability exists in the Session Initiation Protocol (SIP)
      implementation in Cisco IOS Software that can be exploited remotely
      to cause a reload of the Cisco IOS device.
      
      Cisco has released free software updates that address this
      vulnerability. There are no workarounds available to mitigate the
      vulnerability apart from disabling SIP, if the Cisco IOS device does
      not need to run SIP for VoIP services. However, mitigation techniques
      are available to help limit exposure to the vulnerability.
      
      This advisory is posted at the following link: 
      http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml
      
      Note: The March 25, 2009, Cisco IOS Security Advisory bundled
      publication includes eight Security Advisories. All of the advisories
      address vulnerabilities in Cisco IOS Software. Each advisory lists
      the releases that correct the vulnerability or vulnerabilities in the
      advisory. The following table lists releases that correct all Cisco
      IOS Software vulnerabilities that have been published in Cisco
      Security Advisories on March 25, 2009, or earlier.
      
      http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml
      
      Individual publication links are listed below:
      
        * Cisco IOS cTCP Denial of Service Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml
      
        * Cisco IOS Software Multiple Features IP Sockets Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml
      
        * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml
      
        * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml
      
        * Cisco IOS Software Session Initiation Protocol Denial of Service
          Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml
      
        * Cisco IOS Software Multiple Features Crafted TCP Sequence
          Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml
      
        * Cisco IOS Software Multiple Features Crafted UDP Packet
          Vulnerability
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml
      
        * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities
          http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml
      
      Affected Products
      =================
      
      This vulnerability only affects devices running Cisco IOS Software
      with SIP voice services enabled.
      
      Vulnerable Products
      +------------------
      
      Cisco devices running affected Cisco IOS Software versions that
      process SIP messages are affected. The only requirement for this
      vulnerability is that the Cisco IOS device process SIP messages as
      part of configured VoIP functionality. Note that this does not apply
      to the processing of SIP messages as part of the NAT and firewall
      feature sets.
      
      Recent versions of Cisco IOS Software do not process SIP messages by
      default. Creating a dial peer by way of the command dial-peer voice
      will start the SIP processes and cause the Cisco IOS device to start
      processing SIP messages. In addition, several features within Cisco
      Unified Communications Manager Express, such as ePhones, once
      configured will also automatically start the SIP process, which will
      cause the device to start processing SIP messages. An example of an
      affected configuration is as follows:
      
          dial-peer voice <Voice dial-peer tag> voip
           ...
          !
      
      Note: Older versions of Cisco IOS Software were affected by a bug
      that caused Cisco IOS Software to process SIP messages without being
      configured for SIP operation. Refer to http://www.cisco.com/warp/
      public/707/cisco-sa-20070131-sip.shtml for additional information on
      Cisco bug ID CSCsb25337.
      
      In addition to inspecting the Cisco IOS device configuration for a
      dial-peer command that causes the device to process SIP messages,
      administrators can also use the command show processes | include SIP
      to determine whether Cisco IOS Software is running the processes that
      handle SIP messages. In the following example, the presence of the
      processes CCSIP_UDP_SOCKET and CCSIP_TCP_SOCKET indicates that the
      Cisco IOS device is processing SIP messages:
      
              Router#show processes | include SIP
               147 Mwe 40F46DF4           12          2    600023468/24000  0 CCSIP_SPI_CONTRO
               148 Mwe 40F21244            0          1       0 5524/6000   0 CCSIP_DNS
               149 Mwe 40F48254            4          1    400023108/24000  0 CCSIP_UDP_SOCKET
               150 Mwe 40F48034            4          1    400023388/24000  0 CCSIP_TCP_SOCKET
      
      Warning: Since there are several ways a device running Cisco IOS
      Software can start processing SIP messages, it is recommended that
      the show processes | include SIP command be used to determine whether
      the device is processing SIP messages instead of relying on the
      presence of specific configuration commands.
      
      To determine the Cisco IOS Software release that is running on a
      Cisco product, administrators can log in to the device and issue the
      show version command to display the system banner. The system banner
      confirms that the device is running Cisco IOS Software by displaying
      text similar to "Cisco Internetwork Operating System Software" or
      "Cisco IOS Software." The image name displays in parentheses,
      followed by "Version" and the Cisco IOS Software release name. Other
      Cisco devices do not have the show version command or may provide
      different output.
      
      The following example identifies a Cisco product that is running
      Cisco IOS Software Release 12.3(26) with an installed image name of
      C2500-IS-L:
      
          Router#show version
          Cisco Internetwork Operating System Software
          IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2)
          Technical Support: http://www.cisco.com/techsupport
          Copyright (c) 1986-2008 by cisco Systems, Inc.
          Compiled Mon 17-Mar-08 14:39 by dchih
      
          !--- output truncated
      
      
      The following example identifies a Cisco product that is running
      Cisco IOS Software Release 12.4(20)T with an installed image name of
      C1841-ADVENTERPRISEK9-M:
      
          Router#show version
          Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3)
          Technical Support: http://www.cisco.com/techsupport
          Copyright (c) 1986-2008 by Cisco Systems, Inc.
          Compiled Thu 10-Jul-08 20:25 by prod_rel_team
      
          !--- output truncated
      
      
      Additional information about Cisco IOS Software release naming
      conventions is available in "White Paper: Cisco IOS Reference Guide"
      at the following link: http://www.cisco.com/warp/public/620/1.html
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
      The SIP Application Layer Gateway (ALG), which is used by the Cisco
      IOS NAT and firewall features of Cisco IOS Software, is not affected
      by this vulnerability.
      
      Cisco devices that are running Cisco IOS XE Software and Cisco IOS XR
      Software are not affected.
      
      No other Cisco products are currently known to be affected by this
      vulnerability.
      
      Details
      =======
      
      SIP is a popular signaling protocol that is used to manage voice and
      video calls across IP networks such as the Internet. SIP is
      responsible for handling all aspects of call setup and termination.
      Voice and video are the most popular types of sessions that SIP
      handles, but the protocol has the flexibility to accommodate other
      applications that require call setup and termination. SIP call
      signaling can use UDP (port 5060), TCP (port 5060), or TLS (TCP port
      5061) as the underlying transport protocol.
      
      A denial of service (DoS) vulnerability exists in the SIP
      implementation in Cisco IOS Software. This vulnerability is triggered
      by processing a specific and valid SIP message.
      
      This vulnerability is documented in Cisco Bug ID CSCsu11522 and has
      been assigned Common Vulnerabilities and Exposures (CVE) ID 
      CVE-2009-0636.
      
      Note: The vulnerabilities described in the advisories Cisco IOS
      Software Multiple Features IP Sockets Vulnerability and Cisco IOS
      Software Multiple Features Crafted UDP Packet Vulnerability, both
      part of this bundle of Cisco IOS advisories, may also impact SIP
      operations.
      
      Vulnerability Scoring Details
      =============================
      
      Cisco has provided 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 2.0.
      
      CVSS is a standards-based scoring method that conveys vulnerability
      severity and helps determine urgency and priority of response.
      
      Cisco has provided a base and temporal score. Customers can then
      compute environmental scores to assist in determining the impact of
      the vulnerability in individual networks.
      
      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
      
      CSCsu11522 - A voice gateway may crash when processing valid SIP
      
      CVSS Base Score - 7.8
      
       Access Vector           - Network
       Access Complexity       - Low
       Authentication          - None
       Confidentiality Impact  - None
       Integrity Impact        - None
       Availability Impact     - Complete
      
      CVSS Temporal Score - 6.4
      
       Exploitability          - Functional
       Remediation Level       - Official-Fix
       Report Confidence       - Confirmed
      
      Impact
      ======
      
      Successful exploitation of the vulnerability described in this
      document may result in a reload of the device. The issue could be
      repeatedly exploited to cause an extended DoS condition.
      
      Software Versions and Fixes
      ===========================
      
      When considering software upgrades, also consult 
      http://www.cisco.com/go/psirt and any subsequent advisories to 
      determine exposure and a complete upgrade solution.
      
      In all cases, customers should exercise caution to be certain the
      devices to be upgraded contain sufficient memory and that current
      hardware and software configurations will continue to be supported
      properly by the new release. If the information is not clear, contact
      the Cisco Technical Assistance Center (TAC) or your contracted
      maintenance provider for assistance.
      
      Each row of the Cisco IOS software table (below) names a Cisco IOS
      release train. If a given release train is vulnerable, then the
      earliest possible releases that contain the fix (along with the
      anticipated date of availability for each, if applicable) are listed
      in the "First Fixed Release" column of the table. The "Recommended
      Release" column indicates the releases which have fixes for all the
      published vulnerabilities at the time of this Advisory. A device
      running a release in the given train that is earlier than the release
      in a specific column (less than the First Fixed Release) is known to
      be vulnerable. Cisco recommends upgrading to a release equal to or
      later than the release in the "Recommended Releases" column of the
      table.
      
      Note: In addition to CSCsu11522 and because of its impact on SIP
      operation, this table of fixed software takes into consideration the
      vulnerability tracked by Cisco Bug CSCsk64158 , from "Cisco Security
      Advisory: Crafted UDP Packet Affects Multiple Cisco IOS Features" 
      (http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml)
      The table does not take into consideration the vulnerability
      disclosed by "Cisco Security Advisory: Cisco IOS IP Sockets
      Vulnerability Affecting Multiple Cisco IOS Features", which may
      impact SIP over TLS.
      
      +-------------------------------------------------------------------+
      |   Major    |          Availability of Repaired Releases           |
      |  Release   |                                                      |
      |------------+------------------------------------------------------|
      | Affected   |                                     | Recommended    |
      | 12.0-Based | First Fixed Release                 | Release        |
      | Releases   |                                     |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0       | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0DA     | Vulnerable; first fixed in 12.2DA   | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0DB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0DC     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.0S      | 12.0(32)S12                         | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      | 12.0SC     | Vulnerable; first fixed in 12.0S    | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      | 12.0SL     | Vulnerable; first fixed in 12.0S    | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0SP     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.0ST     | Vulnerable; first fixed in 12.0S    | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      | 12.0SX     | Vulnerable; first fixed in 12.0S    | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      | 12.0SY     | 12.0(32)SY8                         | 12.0(32)SY8    |
      |------------+-------------------------------------+----------------|
      | 12.0SZ     | Vulnerable; first fixed in 12.0S    | 12.0(32)S12    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0T      | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.0W      | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.0WC     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.0WT     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XC     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XD     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XE     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.0XF     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XG     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XH     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Releases prior to 12.0(4)XI2 are    | 12.4(18e)      |
      |            | vulnerable, release 12.0(4)XI2 and  |                |
      | 12.0XI     | later are not vulnerable; first     | 12.4(23a);     |
      |            | fixed in 12.4                       | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XJ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XK     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XL     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XM     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XN     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XQ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XR     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XS     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XT     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.0XV     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | Affected   |                                     | Recommended    |
      | 12.1-Based | First Fixed Release                 | Release        |
      | Releases   |                                     |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1       | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.1AA     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1AX     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.1(22)EA13   |
      | 12.1AY     | Vulnerable; first fixed in 12.1EA   |                |
      |            |                                     | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.1(22)EA13   |
      | 12.1AZ     | Vulnerable; first fixed in 12.1EA   |                |
      |            |                                     | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.1CX     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1DA     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1DB     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1DC     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1E      | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.1EA     | 12.1(22)EA13                        | 12.1(22)EA13   |
      |------------+-------------------------------------+----------------|
      | 12.1EB     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SCB1   |
      | 12.1EC     | Vulnerable; first fixed in 12.3BC   |                |
      |            |                                     | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      | 12.1EO     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1EU     | Vulnerable; first fixed in 12.2SG   | 12.2(31)SGA9   |
      |------------+-------------------------------------+----------------|
      | 12.1EV     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1EW     | Vulnerable; migrate to 12.2SGA      | 12.2(31)SGA9   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1EX     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.1EY     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.1EZ     | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1GA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1GB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1T      | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XC     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XD     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XE     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XF     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XG     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XH     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XI     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XJ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XL     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XM     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XP     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XQ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XR     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XS     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XT     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XU     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XV     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XW     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XX     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XY     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1XZ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YC     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YD     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Releases prior to 12.1(5)YE6 are    | 12.4(18e)      |
      |            | vulnerable, release 12.1(5)YE6 and  |                |
      | 12.1YE     | later are not vulnerable; first     | 12.4(23a);     |
      |            | fixed in 12.4                       | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YF     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.1YH     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.1YI     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.1(22)EA13   |
      | 12.1YJ     | Vulnerable; first fixed in 12.1EA   |                |
      |            |                                     | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | Affected   |                                     | Recommended    |
      | 12.2-Based | First Fixed Release                 | Release        |
      | Releases   |                                     |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2       | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2B      | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to 12.2SCB or   | 12.2(33)SCB1   |
      | 12.2BC     | 12.3BC                              |                |
      |            |                                     | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2BW     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2BX     | Vulnerable; migrate to 12.2SB       | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2BY     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2BZ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to 12.2SCB or   | 12.2(33)SCB1   |
      | 12.2CX     | 12.3BC                              |                |
      |            |                                     | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to 12.2SCB or   | 12.2(33)SCB1   |
      | 12.2CY     | 12.3BC                              |                |
      |            |                                     | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      | 12.2CZ     | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            | 12.2(12)DA14; Available on          |                |
      | 12.2DA     | 30-JUL-2009                         | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2DD     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2DX     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2EW     | Vulnerable; first fixed in 12.2SG   | 12.2(31)SGA9   |
      |------------+-------------------------------------+----------------|
      | 12.2EWA    | Vulnerable; first fixed in 12.2SG   | 12.2(31)SGA9   |
      |------------+-------------------------------------+----------------|
      | 12.2EX     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2EY     | 12.2(44)EY                          | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2EZ     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2FX     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2FY     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2FZ     | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SRC4;  |
      | 12.2IRA    | Vulnerable; first fixed in 12.2SRC  | Available on   |
      |            |                                     | 18-MAY-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SRC4;  |
      | 12.2IRB    | Vulnerable; first fixed in 12.2SRC  | Available on   |
      |            |                                     | 18-MAY-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXA    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXB    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXC    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXD    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXE    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXF    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to any release  | 12.2(18)IXH;   |
      | 12.2IXG    | in 12.2IXH                          | Available on   |
      |            |                                     | 31-MAR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2JA     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2JK     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2MB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2MC     | 12.2(15)MC2m                        | 12.2(15)MC2m   |
      |------------+-------------------------------------+----------------|
      | 12.2S      | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      |            | 12.2(28)SB13                        |                |
      |            |                                     |                |
      | 12.2SB     | 12.2(31)SB14                        | 12.2(33)SB4    |
      |            |                                     |                |
      |            | 12.2(33)SB3                         |                |
      |------------+-------------------------------------+----------------|
      | 12.2SBC    | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      | 12.2SCA    | Vulnerable; first fixed in 12.2SCB  | 12.2(33)SCB1   |
      |------------+-------------------------------------+----------------|
      | 12.2SCB    | 12.2(33)SCB1                        | 12.2(33)SCB1   |
      |------------+-------------------------------------+----------------|
      |            | 12.2(50)SE                          |                |
      |            |                                     |                |
      | 12.2SE     | 12.2(46)SE2                         | 12.2(44)SE6    |
      |            |                                     |                |
      |            | 12.2(44)SE5                         |                |
      |------------+-------------------------------------+----------------|
      | 12.2SEA    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SEB    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SEC    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SED    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SEE    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SEF    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      | 12.2SEG    | Vulnerable; first fixed in 12.2SE   | 12.2(44)SE6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(52)SG;    |
      | 12.2SG     | 12.2(50)SG                          | Available on   |
      |            |                                     | 15-MAY-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2SGA    | 12.2(31)SGA9                        | 12.2(31)SGA9   |
      |------------+-------------------------------------+----------------|
      | 12.2SL     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.2SM     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SO     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SQ     | 12.2(44)SQ1                         |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SRD1   |
      |            |                                     |                |
      | 12.2SRA    | Vulnerable; first fixed in 12.2SRC  | 12.2(33)SRC4;  |
      |            |                                     | Available on   |
      |            |                                     | 18-MAY-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SRC4;  |
      |            |                                     | Available on   |
      |            |                                     | 18-MAY-2009    |
      |            |                                     |                |
      | 12.2SRB    | Vulnerable; first fixed in 12.2SRC  | 12.2(33)SRD1   |
      |            |                                     |                |
      |            |                                     | 12.2(33)SRB5a; |
      |            |                                     | Available on   |
      |            |                                     | 3-April-2009   |
      |------------+-------------------------------------+----------------|
      |            | 12.2(33)SRC4; Available on          | 12.2(33)SRC4;  |
      | 12.2SRC    | 18-MAY-2009                         | Available on   |
      |            |                                     | 18-MAY-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2SRD    | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.2STE    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2SU     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2SV     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SVA    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SVC    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SVD    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SVE    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SW     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2SX     | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2SXA    | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2SXB    | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2SXD    | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2SXE    | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2SXF    | 12.2(18)SXF16                       | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      |            | 12.2(33)SXH5; Available on          | 12.2(33)SXH5;  |
      | 12.2SXH    | 20-APR-2009                         | Available on   |
      |            |                                     | 20-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2SXI    | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.2SY     | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      | 12.2SZ     | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2T      | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2TPC    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XB     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XC     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XD     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XE     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | Vulnerable; migrate to 12.2SCB or   | 12.2(33)SCB1   |
      | 12.2XF     | 12.3BC                              |                |
      |            |                                     | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XG     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XH     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XI     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XJ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XK     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XL     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XM     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SB4    |
      | 12.2XN     | Vulnerable; first fixed in 12.2SRC  |                |
      |            |                                     | 12.2(33)SRD1   |
      |------------+-------------------------------------+----------------|
      | 12.2XNA    | Vulnerable; migrate to any release  | 12.2(33)SRD1   |
      |            | in 12.2SRD                          |                |
      |------------+-------------------------------------+----------------|
      | 12.2XNB    | 12.2(33)XNB1                        | 12.2(33)XNB3   |
      |------------+-------------------------------------+----------------|
      | 12.2XNC    | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.2XO     | 12.2(46)XO                          | 12.2(46)XO     |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XQ     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XR     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XS     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XT     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XU     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XV     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2XW     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2YA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2YB     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YC     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YD     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YE     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YF     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YG     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YH     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YJ     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YK     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YL     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2YM     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2YN     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YO     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2YP     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2YQ     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YR     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YS     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.2YT     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YU     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YV     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YW     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YX     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YY     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2YZ     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZA     | Vulnerable; first fixed in 12.2SXF  | 12.2(18)SXF16  |
      |------------+-------------------------------------+----------------|
      | 12.2ZB     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZC     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZD     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2ZE     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2ZF     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.2ZG     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.2ZH     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2ZJ     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZL     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZP     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.2(33)SXH5;  |
      | 12.2ZU     | Vulnerable; first fixed in 12.2SXH  | Available on   |
      |            |                                     | 20-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.2ZX     | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      | 12.2ZY     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.2ZYA    | 12.2(18)ZYA1                        | 12.2(18)ZYA1   |
      |------------+-------------------------------------+----------------|
      | Affected   |                                     | Recommended    |
      | 12.3-Based | First Fixed Release                 | Release        |
      | Releases   |                                     |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.3       | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3B      | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3BC     | 12.3(23)BC6                         | 12.3(23)BC6    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3BW     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3EU     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.3JA     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.3JEA    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.3JEB    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.3JEC    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3JK     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3JL     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.3JX     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3T      | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3TPC    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.3VA     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.3XA     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3XB     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XC     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XD     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.3XE     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3XF     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XG     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3XI     | Vulnerable; first fixed in 12.2SB   | 12.2(33)SB4    |
      |------------+-------------------------------------+----------------|
      | 12.3XJ     | Vulnerable; first fixed in 12.3YX   | 12.3(14)YX14   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XK     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XL     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XQ     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(18e)      |
      |            |                                     |                |
      | 12.3XR     | Vulnerable; first fixed in 12.4     | 12.4(23a);     |
      |            |                                     | Available on   |
      |            |                                     | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XS     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XU     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3XW     | Vulnerable; first fixed in 12.3YX   | 12.3(14)YX14   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XX     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XY     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3XZ     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YA     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YD     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3YF     | Vulnerable; first fixed in 12.3YX   | 12.3(14)YX14   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YG     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YH     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YI     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YJ     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YK     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3YM     | 12.3(14)YM13                        | 12.3(14)YM13   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YQ     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YS     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YT     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3YU     | Vulnerable; first fixed in 12.4XB   | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.3YX     | 12.3(14)YX14                        | 12.3(14)YX14   |
      |------------+-------------------------------------+----------------|
      | 12.3YZ     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.3ZA     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | Affected   |                                     | Recommended    |
      | 12.4-Based | First Fixed Release                 | Release        |
      | Releases   |                                     |                |
      |------------+-------------------------------------+----------------|
      |            | 12.4(18e)                           | 12.4(18e)      |
      |            |                                     |                |
      | 12.4       | 12.4(23)                            | 12.4(23a);     |
      |            |                                     | Available on   |
      |            | 12.4(23a); Available on 30-APR-2009 | 30-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.4JA     | 12.4(16b)JA1                        |                |
      |------------+-------------------------------------+----------------|
      | 12.4JDA    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4JK     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4JL     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4JMA    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4JMB    | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4JX     | Vulnerable; first fixed in 12.4JA   |                |
      |------------+-------------------------------------+----------------|
      | 12.4MD     | 12.4(11)MD7                         | 12.4(11)MD7    |
      |------------+-------------------------------------+----------------|
      | 12.4MR     | 12.4(19)MR1                         | 12.4(19)MR2    |
      |------------+-------------------------------------+----------------|
      | 12.4SW     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      |            | 12.4(20)T2                          |                |
      |            |                                     | 12.4(22)T1     |
      |            | 12.4(15)T8                          |                |
      | 12.4T      |                                     | 12.4(15)T9;    |
      |            | 12.4(22)T                           | Available on   |
      |            |                                     | 29-APR-2009    |
      |            | 12.4(15)T9; Available on            |                |
      |            | 29-APR-2009                         |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XA     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | 12.4(15)T8                          | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XB     | 12.4(20)T2                          | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            | 12.4(15)T9; Available on            | 29-APR-2009    |
      |            | 29-APR-2009                         |                |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XC     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            | 12.4(4)XD12; Available on           | 12.4(4)XD12;   |
      | 12.4XD     | 27-MAR-2009                         | Available on   |
      |            |                                     | 27-MAR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XE     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XF     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            | 12.4(15)T8                          |                |
      | 12.4XG     |                                     | 12.4(15)T9;    |
      |            | 12.4(20)T2                          | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XJ     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XK     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.4XL     | 12.4(15)XL4                         | 12.4(15)XL4    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XM     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.4XN     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4XP     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4XQ     | 12.4(15)XQ2                         | 12.4(15)XQ2    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XR     | 12.4(15)XR4                         | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XT     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.4XV     | Vulnerable; contact TAC             |                |
      |------------+-------------------------------------+----------------|
      | 12.4XW     | 12.4(11)XW10                        | 12.4(11)XW10   |
      |------------+-------------------------------------+----------------|
      |            |                                     | 12.4(22)T1     |
      |            |                                     |                |
      | 12.4XY     | Vulnerable; first fixed in 12.4T    | 12.4(15)T9;    |
      |            |                                     | Available on   |
      |            |                                     | 29-APR-2009    |
      |------------+-------------------------------------+----------------|
      | 12.4XZ     | 12.4(15)XZ2                         | 12.4(15)XZ2    |
      |------------+-------------------------------------+----------------|
      | 12.4YA     | 12.4(20)YA2                         | 12.4(20)YA3    |
      |------------+-------------------------------------+----------------|
      | 12.4YB     | Not Vulnerable                      |                |
      |------------+-------------------------------------+----------------|
      | 12.4YD     | Not Vulnerable                      |                |
      +-------------------------------------------------------------------+
      
      Workarounds
      ===========
      
      If the affected Cisco IOS device requires SIP for VoIP services, SIP
      cannot be disabled, and therefore, no workarounds are available.
      Users are advised to apply mitigation techniques to help limit
      exposure to the vulnerability. Mitigation consists of allowing only
      legitimate devices to connect to the routers. To increase
      effectiveness, the mitigation must be coupled with anti-spoofing
      measures on the network edge. This action is required because SIP can
      use UDP as the transport protocol.
      
      Additional mitigations that can be deployed on Cisco devices within
      the network are available in the companion document "Cisco Applied
      Mitigation Bulletin: Identifying and Mitigating Exploitation of the
      Cisco IOS SIP and Crafted UDP Vulnerabilities", which is available at
      the following location: 
      http://www.cisco.com/warp/public/707/cisco-amb-20090325-sip-and-udp.shtml
      
      Disable SIP Listening Ports
      +--------------------------
      
      For devices that do not require SIP to be enabled, the simplest and
      most effective workaround is to disable SIP processing on the device.
      Some versions of Cisco IOS Software allow administrators to
      accomplish this with the following commands:
      
          sip-ua
           no transport udp
           no transport tcp
      
      Warning: When applying this workaround to devices that are processing
      Media Gateway Control Protocol (MGCP) or H.323 calls, the device will
      not stop SIP processing while active calls are being processed. Under
      these circumstances, this workaround should be implemented during a
      maintenance window when active calls can be briefly stopped.
      
      After applying this workaround, administrators are advised to use the
      show commands, as discussed in the Affected Products section of this
      advisory, to confirm that the Cisco IOS device is no longer
      processing SIP messages.
      
      Control Plane Policing
      +---------------------
      
      For devices that need to offer SIP services it is possible to use
      Control Plane Policing (CoPP) to block SIP traffic to the device from
      untrusted sources. Cisco IOS 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 the network:
      
      
          !-- The 192.168.1.0/24 network and the 172.16.1.1 host are trusted.
          !-- Everything else is not trusted. The following access list is used
          !-- to determine what traffic needs to be dropped by a control plane
          !-- policy (the CoPP feature.) If the access list matches (permit)
          !-- then traffic will be dropped and if the access list does not
          !-- match (deny) then traffic will be processed by the router.
      
          access-list 100 deny udp 192.168.1.0 0.0.0.255 any eq 5060
          access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5060
          access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5061
          access-list 100 deny udp host 172.16.1.1 any eq 5060
          access-list 100 deny tcp host 172.16.1.1 any eq 5060
          access-list 100 deny tcp host 172.16.1.1 any eq 5061
          access-list 100 permit udp any any eq 5060
          access-list 100 permit tcp any any eq 5060
          access-list 100 permit tcp any any eq 5061
      
          !-- 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-sip-class
            match access-group 100
      
          !-- Create a Policy-Map that will be applied to the
          !-- Control-Plane of the device.
      
          policy-map drop-sip-traffic
           class drop-sip-class
            drop
      
          !-- Apply the Policy-Map to the Control-Plane of the
          !-- device.
      
          control-plane
           service-policy input drop-sip-traffic
      
      Warning: Because SIP can use UDP as a transport protocol, it is
      possible to easily spoof the IP address of the sender, which may
      defeat access control lists that permit communication to these ports
      from trusted IP addresses.
      
      In the above CoPP example, the access control entries (ACEs) that
      match the potential exploit packets with the "permit" action result
      in these packets being discarded by the policy-map "drop" function,
      while packets that match the "deny" action (not shown) are not
      affected 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/web/about/security/intelligence/coppwp_gs.html
      and 
      http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html
      
      Obtaining Fixed Software
      ========================
      
      Cisco has released free software updates that address these
      vulnerabilities. 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/en/US/docs/general/warranty/English/EU1KEN_.html,
      or as otherwise set forth at Cisco.com Downloads at 
      http://www.cisco.com/public/sw-center/sw-usingswc.shtml
      
      Do not contact 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 agreements 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 do not hold a Cisco
      service contract, and customers who purchase through third-party
      vendors but are unsuccessful in obtaining fixed software through
      their point of sale should acquire 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
      
      Customers should have their product serial number available and be
      prepared to give the URL of this notice as evidence of entitlement to
      a free upgrade. Free upgrades for non-contract customers must be
      requested through the TAC.
      
      Refer to 
      http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
      for additional TAC contact information, including 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 discovered during handling of customer service
      requests.
      
      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-20090325-sip.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-bulletins at lists dot 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 |               | Initial    |
      | 1.0      | 2009-March-25 | 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
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