[apops] Cisco Security Advisory: Cisco IOS Software Internet Key Exchang

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Software Internet Key Exchange Resource Exhaustion Vulnerability
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Wed, 23 Sep 2009 12:15:00 -0400
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      Cisco Security Advisory: Cisco IOS Software Internet Key Exchange
      Resource Exhaustion Vulnerability
      
      Advisory ID: cisco-sa-20090923-ipsec
      
      Revision 1.0
      
      For Public Release 2009 September 23
      
      +---------------------------------------------------------------------
      
      Summary
      =======
      
      Cisco IOS® devices that are configured for Internet Key Exchange
      (IKE) protocol and certificate based authentication are vulnerable to
      a resource exhaustion attack. Successful exploitation of this
      vulnerability may result in the allocation of all available Phase 1
      security associations (SA) and prevent the establishment of new IPsec
      sessions.
      
      Cisco has released free software updates that address this
      vulnerability.
      
      This advisory is posted at:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20090923-ipsec.shtml
      
      Note: The September 23, 2009, Cisco IOS Security Advisory bundled
      publication includes eleven Security Advisories. Ten of the
      advisories address vulnerabilities in Cisco IOS Software, and one
      advisory addresses a vulnerability in Cisco Unified Communications
      Manager. Each advisory lists the releases that correct the
      vulnerability or vulnerabilities detailed in the advisory. The
      following table lists releases that correct all Cisco IOS Software
      vulnerabilities that have been published on September 23, 2009, or
      earlier.
      
      http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml
      
      Individual publication links are in "Cisco Event Response: Semiannual
      Cisco IOS Software Advisory Bundled Publication" at the following
      link:
      
      http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html
      
      Affected Products
      =================
      
      Cisco IOS devices that are configured for IKE and certificate based
      authentication are affected.
      
      Vulnerable Products
      +------------------
      
      IKE is enabled by default if IPsec is used. Cisco IOS devices that
      are configured for IKE will listen on UDP port 500, UDP port 4500 if
      the device is configured for NAT Traversal (NAT-T), or UDP ports 848
      or 4848 if the device is configured for Group Domain of
      Interpretation (GDOI). The following outputs show a router that is
      listening on UDP port 500:
      
          Router#show ip sockets 
          Proto    Remote      Port      Local       Port  In Out Stat TTY OutputIF
          ....
           17   --listen--          192.168.66.129    500   0   0   11   0 
          ....
      
      Or
      
          Router-#show udp
          Proto        Remote      Port      Local       Port  In Out  Stat TTY OutputIF
           17       --listen--          192.0.2.1         500   0   0  1011   0 
           17(v6)   --listen--          --any--           500   0   0 20011   0 
          Router#
      
      IKE configurations that are performing certificate based
      authentication will display "Rivest-Shamir-Adleman Signature" as the
      authentication method in the output of the "show crypto isakmp policy"
      command. This output is shown in the following example:
      
          Router#show crypto isakmp policy                               
          
          Global IKE policy
          Default protection suite
                  encryption algorithm:   DES - Data Encryption Standard (56 bit keys).
                  hash algorithm:         Secure Hash Standard
                  authentication method:  Rivest-Shamir-Adleman Signature
                  Diffie-Hellman group:   #1 (768 bit)
                  lifetime:               86400 seconds, no volume limit
      
      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 6500 Series device that is
      running Cisco IOS Software release 12.2(18)SXF7 with an installed
      image name of s72033_rp-IPSERVICESK9_WAN-M:
      
          Router#show version 
          Cisco Internetwork Operating System Software 
          IOS (tm) s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(18)SXF7, RELEASE SOFTWARE (fc1)
          Technical Support: http://www.cisco.com/techsupport
          Copyright ©) 1986-2006 by cisco Systems, Inc.
          Compiled Thu 23-Nov-06 06:42 by kellythw
          <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
      +--------------------------------
      
      Cisco IOS XR Software is not affected by this vulnerability.
      
      No other Cisco products are currently known to be affected by this
      vulnerability.
      
      Details
      =======
      
      IPsec is an IP security feature that provides robust authentication
      and encryption of IP packets. IKE is a key management protocol
      standard that is used in conjunction with the IPsec standard.
      
      IKE is a hybrid protocol that implements the Oakley and SKEME key
      exchanges inside the Internet Security Association and Key Management
      Protocol (ISAKMP) framework. (ISAKMP, Oakley, and SKEME are security
      protocols that are implemented by IKE.). More information on IKE is
      available at the following link:
      
      http://www.cisco.com/en/US/docs/ios/12_1/security/configuration/guide/scdike.html
      
      A vulnerability exists in the IKE implementation of Cisco IOS
      Software, if the certificate based authentication method is used.
      Successful exploitation of this vulnerability may result in the
      allocation of all available Phase 1 SAs, which may prevent new IPSec
      sessions from being established.
      
      Administrators can view Phase 1 SAs that are allocated as a result of
      exploitation by issuing the "show crypto isakmp sa" command. The
      following example displays sample output for this command:
      
          Router#show crypto isakmp sa
          IPv4 Crypto ISAKMP SA
          dst             src             state          conn-id slot status
          10.48.66.77     10.48.66.6      MM_KEY_EXCH       1004 ACTIVE
          10.48.66.77     10.48.66.6      MM_KEY_EXCH       1003 ACTIVE
          10.48.66.77     10.48.66.6      MM_KEY_EXCH       1002 ACTIVE
          ....
      
      Any allocated SA can be de-allocated up manually by using the "clear
      crypto isakmp <conn-ID>" command.
      
      This vulnerability is addressed by the Cisco Bug IDs CSCsy07555 and
      CSCee72997 and has been assigned Common Vulnerabilities and Exposures
      (CVE) ID CVE-2009-2868.
      
      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
      
      CSCsy07555 - P1 SA stuck in KEY_EXCH forever
      
      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
      
      CSCee72997 - P1 SA stuck in KEY_EXCH forever
      
      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 this vulnerability may result in the
      allocation of all available Phase 1 SAs, which may prevent new IPsec
      sessions from being established.
      
      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.
      
      +-------------------------------------------------------------------+
      |   Major    |          Availability of Repaired Releases           |
      |  Release   |                                                      |
      |------------+------------------------------------------------------|
      |  Affected  |                                       | Recommended  |
      | 12.0-Based |          First Fixed Release          |   Release    |
      |  Releases  |                                       |              |
      |-------------------------------------------------------------------|
      | There are no affected 12.0 based releases                         |
      |-------------------------------------------------------------------|
      |  Affected  |                                       | Recommended  |
      | 12.1-Based |          First Fixed Release          |   Release    |
      |  Releases  |                                       |              |
      |-------------------------------------------------------------------|
      | There are no affected 12.1 based releases                         |
      |-------------------------------------------------------------------|
      |  Affected  |                                       | Recommended  |
      | 12.2-Based |          First Fixed Release          |   Release    |
      |  Releases  |                                       |              |
      |------------+---------------------------------------+--------------|
      | 12.2       | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2B      | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2BC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2BW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2BX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2BY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2BZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2CX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2CY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2CZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2DA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2DD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2DX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2EW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2EWA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            | Releases prior to 12.2(44)EX are      | 12.2(50)SE3  |
      |            | vulnerable, release 12.2(44)EX and    |              |
      | 12.2EX     | later are not vulnerable; migrate to  | 12.2(52)SE;  |
      |            | any release in 12.2SEG                | Available on |
      |            |                                       | 13-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.2EY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2EZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2FX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2FY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2FZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IRA    | Vulnerable; first fixed in 12.2SRD    | 12.2(33)SRD3 |
      |------------+---------------------------------------+--------------|
      | 12.2IRB    | Vulnerable; first fixed in 12.2SRD    | 12.2(33)SRD3 |
      |------------+---------------------------------------+--------------|
      |            | Vulnerable; Contact your support      |              |
      | 12.2IRC    | organization per the instructions in  |              |
      |            | Obtaining Fixed Software section of   |              |
      |            | this advisory                         |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXB    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXD    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXE    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXF    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXG    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2IXH    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2JA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2JK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2MB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2MC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2S      | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.2(31)SB16 |
      | 12.2SB     | 12.2(33)SB6                           |              |
      |            |                                       | 12.2(33)SB7  |
      |------------+---------------------------------------+--------------|
      | 12.2SBC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SCA    | Vulnerable; first fixed in 12.2SCB    | 12.2(33)SCB4 |
      |------------+---------------------------------------+--------------|
      | 12.2SCB    | 12.2(33)SCB4                          | 12.2(33)SCB4 |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.2(50)SE3  |
      |            | 12.2(50)SE3                           |              |
      | 12.2SE     |                                       | 12.2(52)SE;  |
      |            | 12.2(52)SE; Available on 13-OCT-2009  | Available on |
      |            |                                       | 13-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.2SEA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SEB    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SEC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SED    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SEE    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SEF    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SEG    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SGA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SM     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SO     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SQ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SRA    | Vulnerable; first fixed in 12.2SRD    | 12.2(33)SRD3 |
      |------------+---------------------------------------+--------------|
      | 12.2SRB    | Vulnerable; first fixed in 12.2SRD    | 12.2(33)SRD3 |
      |------------+---------------------------------------+--------------|
      | 12.2SRC    | 12.2(33)SRC5; Available on            | 12.2(33)SRD3 |
      |            | 29-OCT-2009                           |              |
      |------------+---------------------------------------+--------------|
      |            | 12.2(33)SRD3                          |              |
      | 12.2SRD    |                                       | 12.2(33)SRD3 |
      |            | 12.2(33)SRD2a                         |              |
      |------------+---------------------------------------+--------------|
      | 12.2STE    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SV     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SVA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SVC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SVD    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SVE    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXB    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXD    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXE    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXF    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            | 12.2(33)SXH6; Available on            | 12.2(33)     |
      |            | 30-OCT-2009                           | SXH6;        |
      | 12.2SXH    |                                       | Available on |
      |            | Please see IOS Software Modularity    | 30-OCT-2009  |
      |            | Patch                                 |              |
      |------------+---------------------------------------+--------------|
      | 12.2SXI    | 12.2(33)SXI2a                         | 12.2(33)     |
      |            |                                       | SXI2a        |
      |------------+---------------------------------------+--------------|
      | 12.2SY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2SZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2T      | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2TPC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XE     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XF     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XH     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XI     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XM     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XNA    | Please see Cisco IOS-XE Software      |              |
      |            | Availability                          |              |
      |------------+---------------------------------------+--------------|
      | 12.2XNB    | Please see Cisco IOS-XE Software      |              |
      |            | Availability                          |              |
      |------------+---------------------------------------+--------------|
      | 12.2XNC    | Please see Cisco IOS-XE Software      |              |
      |            | Availability                          |              |
      |------------+---------------------------------------+--------------|
      | 12.2XND    | Please see Cisco IOS-XE Software      |              |
      |            | Availability                          |              |
      |------------+---------------------------------------+--------------|
      | 12.2XO     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XQ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XR     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XS     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XT     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XV     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2XW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YE     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YF     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YH     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YM     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YN     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YO     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YP     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YQ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YR     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YS     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YT     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YV     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2YZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZE     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZF     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZH     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZP     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.2ZYA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |  Affected  |                                       | Recommended  |
      | 12.3-Based |          First Fixed Release          |   Release    |
      |  Releases  |                                       |              |
      |------------+---------------------------------------+--------------|
      | 12.3       | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3B      | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3BC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3BW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3EU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JEA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JEB    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JEC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3JX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            | Vulnerable; first fixed in 12.4       | 12.4(25b)    |
      | 12.3T      |                                       |              |
      |            | Releases up to and including 12.3(8)  | 12.4(23b)    |
      |            | T11 are not vulnerable.               |              |
      |------------+---------------------------------------+--------------|
      | 12.3TPC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3VA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XE     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XF     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XI     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      |            |                                       | 12.4(22)T3   |
      | 12.3XL     | Vulnerable; first fixed in 12.4T      |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.3XQ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(25b)    |
      | 12.3XR     | Vulnerable; first fixed in 12.4       |              |
      |            |                                       | 12.4(23b)    |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(25b)    |
      | 12.3XS     | Vulnerable; first fixed in 12.4       |              |
      |            |                                       | 12.4(23b)    |
      |------------+---------------------------------------+--------------|
      | 12.3XU     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(25b)    |
      | 12.3XX     | Vulnerable; first fixed in 12.4       |              |
      |            |                                       | 12.4(23b)    |
      |------------+---------------------------------------+--------------|
      | 12.3XY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.3XZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(25b)    |
      | 12.3YA     | Vulnerable; first fixed in 12.4       |              |
      |            |                                       | 12.4(23b)    |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YD     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            | Vulnerable; migrate to any release in | 12.4(15)XR7  |
      | 12.3YF     | 12.4XN                                |              |
      |            |                                       | 12.4(22)XR   |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YG     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YH     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YI     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.3YJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YK     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.3YM     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YQ     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YS     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YT     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.3YU     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            | Vulnerable; migrate to any release in | 12.4(15)XR7  |
      | 12.3YX     | 12.4XN                                |              |
      |            |                                       | 12.4(22)XR   |
      |------------+---------------------------------------+--------------|
      |            | Vulnerable; Contact your support      |              |
      | 12.3YZ     | organization per the instructions in  |              |
      |            | Obtaining Fixed Software section of   |              |
      |            | this advisory                         |              |
      |------------+---------------------------------------+--------------|
      | 12.3ZA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |  Affected  |                                       | Recommended  |
      | 12.4-Based |          First Fixed Release          |   Release    |
      |  Releases  |                                       |              |
      |------------+---------------------------------------+--------------|
      |            | Releases prior to 12.4(7) are         | 12.4(25b)    |
      | 12.4       | vulnerable; Releases 12.4(7a) and     |              |
      |            | later are not vulnerable.             | 12.4(23b)    |
      |------------+---------------------------------------+--------------|
      | 12.4GC     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JDA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JDC    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JDD    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JMA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JMB    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4JX     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4MD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4MDA    | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4MR     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4SW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            | 12.4(4)T8                             | 12.4(20)T4   |
      |            |                                       |              |
      | 12.4T      | 12.4(9)T                              | 12.4(22)T3   |
      |            |                                       |              |
      |            | 12.4(6)T1                             | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.4XA     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.4XB     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.4XC     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      |            |                                       | 12.4(15)T10  |
      |            |                                       |              |
      |            |                                       | 12.4(20)T4   |
      |            |                                       |              |
      | 12.4XD     | Vulnerable; first fixed in 12.4T      | 12.4(22)T3   |
      |            |                                       |              |
      |            |                                       | 12.4(24)T2;  |
      |            |                                       | Available on |
      |            |                                       | 23-OCT-2009  |
      |------------+---------------------------------------+--------------|
      | 12.4XE     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XF     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XG     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XJ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XK     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XL     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XM     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XN     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XP     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XQ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XR     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XT     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XV     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XW     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XY     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4XZ     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4YA     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4YB     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4YD     | Not Vulnerable                        |              |
      |------------+---------------------------------------+--------------|
      | 12.4YE     | Not Vulnerable                        |              |
      +-------------------------------------------------------------------+
      
      Cisco IOS XE Software
      +--------------------
      
      +-------------------------------------------------------------------+
      |     Cisco IOS XE Software Release     |    First Fixed Release    |
      |---------------------------------------+---------------------------|
      | 2.1.x                                 | 2.3.0t                    |
      |---------------------------------------+---------------------------|
      | 2.2.x                                 | 2.3.0t                    |
      |---------------------------------------+---------------------------|
      | 2.3.x                                 | Not Vulnerable            |
      |---------------------------------------+---------------------------|
      | 2.4.x                                 | Not Vulnerable            |
      +-------------------------------------------------------------------+
      
      Cisco IOS Software Modularity - Maintenance Packs
      +------------------------------------------------
      
      Customers who are using Cisco IOS Software Modularity can apply the
      respective maintenance packs. More information on Cisco IOS Software
      Modularity can be found at the following link:
      
      http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_bulletin0900aecd80313e15.html
      
      The Maintenance Packs listed below can be downloaded at:
      
      http://www.cisco.com/go/pn
      
      Cisco IOS Software Modularity Maintenance Pack for 12.2SXH
      +---------------------------------------------------------
      
      +-------------------------------------------------------------------+
      |  Cisco IOS Software Release   |   Solution Maintenance Pack(MP)   |
      |-------------------------------+-----------------------------------|
      | 12.2(33)SXH3                  | MP003                             |
      |-------------------------------+-----------------------------------|
      | 12.2(33)SXH4                  | MP002                             |
      |-------------------------------+-----------------------------------|
      | 12.2(33)SXH5                  | MP001                             |
      +-------------------------------------------------------------------+
      
      Workarounds
      ===========
      
      There are no workarounds for this vulnerability.
      
      Additional mitigations that can be deployed on Cisco devices in the
      network are available in the Cisco Applied Mitigation Bulletin
      companion document for this advisory, which is available at the
      following link:
      
      http://www.cisco.com/warp/public/707/cisco-amb-20090923-ipsec.shtml
      
      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 reported to Cisco by a customer.
      
      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-20090923-ipsec.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-September-23 | 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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