[apops] Cisco Security Advisory: Multiple Cisco Products Vulnerable to D

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  • Subject: [apops] Cisco Security Advisory: Multiple Cisco Products Vulnerable to DNS Cache Poisoning Attacks
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Tue, 8 Jul 2008 14:36:40 -0400
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      Cisco Security Advisory: Multiple Cisco Products Vulnerable to DNS Cache
      Poisoning Attacks
      
      Advisory ID: cisco-sa-20080708-dns
      
      http://www.cisco.com/warp/public/707/cisco-sa-20080708-dns.shtml
      
      Revision 1.0
      
      For Public Release 2008 July 08 1800 UTC (GMT)
      
      Summary
      =======
      
      Multiple Cisco products are vulnerable to DNS cache poisoning attacks
      due to their use of insufficiently randomized DNS transaction IDs and
      UDP source ports in the DNS queries that they produce, which may allow
      an attacker to more easily forge DNS answers that can poison DNS caches.
      
      To exploit this vulnerability an attacker must be able to cause a
      vulnerable DNS server to perform recursive DNS queries. Therefore, DNS
      servers that are only authoritative, or servers where recursion is not
      allowed, are not affected.
      
      Cisco has released free software updates that address this vulnerability.
      
      This advisory is posted at
      http://www.cisco.com/warp/public/707/cisco-sa-20080708-dns.shtml.
      
      This security advisory is being published simultaneously with
      announcements from other affected organizations.
      
      Affected Products
      =================
      
      Products that cache DNS responses and process DNS messages with the
      recursion desired (RD) flag set may be vulnerable to a DNS cache
      poisoning attack depending on implementation of the DNS protocol.
      Products that process DNS messages with the RD flag set will attempt to
      answer the question asked on behalf of the client. A product is only
      affected if using a vulnerable implementation of the DNS protocol, the
      DNS server functionality for the product is enabled, and the DNS feature
      for the product is configured to process recursive DNS query messages.
      
      Vulnerable Products
      +------------------
      
      The following Cisco products are capable of acting as DNS servers and
      have been found to have the DNS implementation weakness that makes some
      types of DNS cache poisoning attacks more likely to succeed:
      
        * Cisco IOS Software
      
          A device that is running Cisco IOS Software will be affected if it
          is running a vulnerable version and if it is acting as a DNS server.
      
          All Cisco IOS Software releases that support the DNS server
          functionality and that have not had their DNS implementation
          improved are affected. For information about specific fixed
          versions, please refer to the Software Versions and Fixes section.
      
          A device that is running Cisco IOS Software is configured to act
          as a DNS server if the command "ip dns server" is present in the
          configuration. This command is not enabled by default.
      
        * Cisco Network Registrar
      
          All Cisco Network Registrar versions are affected, and DNS services
          are enabled by default.
      
          The DNS server on CNR is enabled via the command-line interface
          (CLI) commands "server dns enable start-on-reboot" or "dns enable
          start-on-reboot" or via the web management interface in the Servers
          page by selecting the appropriate "Start," "Stop," or "Reload"
          button.
      
        * Cisco Application and Content Networking System
      
          All Cisco Application and Content Networking System (ACNS) versions
          are affected; DNS services are disabled by default.
      
          ACNS is configured to act as a DNS server if the command
          "dns enable" is present in the configuration.
      
        * Cisco Global Site Selector Used in Combination with Cisco Network
          Registrar
      
          The Cisco Global Site Selector (GSS) is affected when it is used in
          combination with Cisco Network Registrar software to provide a more
          complete DNS solution. Fixed software would come in the form of an
          update of the Cisco Network Registrar software rather than an update
          of the GSS software.
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
      Products that do not offer DNS server capabilities are not affected by
      this vulnerability.
      
      The Cisco GSS by itself is not affected by this vulnerability. However,
      it is affected when it is used with Cisco Network Registrar software.
      
      No other Cisco products are currently known to be affected by these
      vulnerabilities.
      
      Details
      =======
      
      The Domain Name System is an integral part of networks that are based
      on TCP/IP such as the Internet. Simply stated, the Domain Name System
      is a hierarchical database that contains mappings of hostnames and IP
      addresses. The DNS protocol is part of the TCP/IP protocol suite and
      allows DNS clients to query the DNS database to resolve hostnames to IP
      addresses.
      
      A DNS server is an application that implements the DNS protocol and that
      has the ability to respond to queries made by DNS clients. When handling
      a query from a DNS client, a DNS server can look into its portion of the
      global DNS database (if the query is for a portion of the DNS database
      for which the DNS server is authoritative), or it can relay the query
      to other DNS servers (if it is configured to do so and if the query
      is for a portion of the DNS database for which the DNS server is not
      authoritative.)
      
      Because of the processing time and bandwidth that is associated with
      handling a DNS query, most DNS servers locally store responses that
      are received from other DNS servers. The area where these responses
      are stored locally is called a "cache." Once a response is stored in a
      cache, the DNS server can use the locally stored response for a certain
      time (called the "time to live") before having to query DNS servers
      again to refresh the local (cached) copy of the response.
      
      A DNS cache poisoning attack is an attack in which an entry in the
      DNS cache of a DNS server is changed so the IP address associated
      with a hostname in the cache does not point to the correct place. For
      example, if www.example.com is mapped to the IP address 192.168.0.1
      and this mapping is present in the cache of a DNS server, an attacker
      who succeeds in poisoning the DNS cache of this server may be able to
      map www.example.com to 10.0.0.1 instead. If this happens, a user who
      is trying to visit www.example.com may end up contacting the wrong web
      server.
      
      Although DNS cache poisoning attacks are not new, a security researcher
      recently presented a technique that allows an attacker to mount
      successful DNS cache poisoning attacks with low complexity tools and
      low traffic requirements. This technique exploits a weakness in most
      implementations of the DNS protocol. The fundamental implementation
      weakness is that the DNS transaction ID and source port number used to
      validate DNS responses are not sufficiently randomized and can easily
      be predicted, which allows an attacker to create forged responses to
      DNS queries that will match the expected values. The DNS server will
      consider such responses to be valid.
      
      The following Cisco products that offer DNS server functionality have
      been found to be susceptible to DNS cache poisoning attacks:
      
        * Cisco IOS Software: The vulnerability documented in Cisco bug ID
          CSCso81854.
      
        * Cisco Network Registrar: The vulnerability documented in Cisco
          bug ID CSCsq01298.
      
        * Cisco Application and Content Networking System (ACNS): The
          vulnerability documented in Cisco bug ID CSCsq21930.
      
      This vulnerability has been assigned Common Vulnerabilities and
      Exposures (CVE) ID CVE-2008-1447.
      
      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
      
      Cisco Bugs:
      
      * DNS cache prone to poisoning/forged answers attacks (CSCsq21930)
      
      * DNS susceptible to forged query response attacks (CSCsq01298)
      
      * Need to make DNS implementation more resilient against forged answers
      (CSCso81854)
      
      CVSS Base Score - 6.4
          Access Vector -            Network
          Access Complexity -        Low
          Authentication -           None
          Confidentiality Impact -   None
          Integrity Impact -         Partial
          Availability Impact -      Partial
      
      CVSS Temporal Score - 5.3
          Exploitability -           Functional
          Remediation Level -        Official-Fix
          Report Confidence -        Confirmed
      
      (same score for the three Cisco bugs listed above.)
      
      Impact
      ======
      
      Successful exploitation of the vulnerability described in this document
      may result in invalid hostname-to-IP address mappings in the cache of an
      affected DNS server. This may lead users of this DNS server to contact
      the wrong provider of network services. The ultimate impact varies
      greatly, ranging from a simple denial of service (for example, making
      www.example.com resolve to 127.0.0.1) to phishing and financial fraud.
      
      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.
      
      Cisco IOS Software
      +-----------------
      
      Each row of the Cisco IOS Software table (below) names a Cisco IOS
      Software 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    |
      |  Release   |     Repaired Releases     |
      |------------+---------------------------|
      |  Affected  | First Fixed | Recommended |
      | 12.0-Based |   Release   |   Release   |
      |  Releases  |             |             |
      |------------+-------------+-------------|
      | 12.0       | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0DA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.0(7)DB   |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.0DB     | release     |             |
      |            | 12.0(7)DB   | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.0(7)DC   |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.0DC     | release     |             |
      |            | 12.0(7)DC   | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.0S      | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SL     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SP     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0ST     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0SZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.0T      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.0W      | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0WC     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.0WT     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XD     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Note:       |             |
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.0(7)XE1  |             |
      |            | are         |             |
      | 12.0XE     | vulnerable, |             |
      |            | release     |             |
      |            | 12.0(7)XE1  |             |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.0XF     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XG     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XH     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XI     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XJ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.0(7)XK2  |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.0XK     | release     |             |
      |            | 12.0(7)XK2  | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.0XL     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XM     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XN     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XQ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.0(7)XR1  |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.0XR     | release     |             |
      |            | 12.0(7)XR1  | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.0XS     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XV     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.0XW     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |  Affected  | First Fixed | Recommended |
      | 12.1-Based |   Release   |   Release   |
      |  Releases  |             |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.1       | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.1AA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1AX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(22)AY1 |             |
      |            | are         |             |
      | 12.1AY     | vulnerable, | 12.1(22)    |
      |            | release     | EA11        |
      |            | 12.1(22)AY1 |             |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.1AZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1CX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1DA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(4)DB1  |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.1DB     | release     |             |
      |            | 12.1(4)DB1  | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(4)DC2  |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.1DC     | release     |             |
      |            | 12.1(4)DC2  | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.1E      | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(11)EA1 |             |
      |            | are         |             |
      | 12.1EA     | vulnerable, | 12.1(22)    |
      |            | release     | EA11        |
      |            | 12.1(11)EA1 |             |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.1EB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EO     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EV     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EW     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Note:       |             |
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(8a)EX  |             |
      |            | are         |             |
      | 12.1EX     | vulnerable, |             |
      |            | release     |             |
      |            | 12.1(8a)EX  |             |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.1EY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1EZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1GA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1GB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.1T      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.1XA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(1)XC1  |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.1XC     | release     |             |
      |            | 12.1(1)XC1  | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.1XD     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XE     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XF     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XG     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XH     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XI     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XJ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XK     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XL     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XM     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XN     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XO     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XP     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XQ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XR     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XS     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XT     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XV     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XW     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1XZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YD     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Note:       |             |
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.1(5)YE1  |             |
      |            | are         | 12.4(19a)   |
      | 12.1YE     | vulnerable, |             |
      |            | release     | 12.4(19b)   |
      |            | 12.1(5)YE1  |             |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.1YF     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YG     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YH     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YI     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.1YJ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |  Affected  | First Fixed | Recommended |
      | 12.2-Based |   Release   |   Release   |
      |  Releases  |             |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2       | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2B      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2BC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2BW     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.2(8)BY   |             |
      |            | are         |             |
      |            | vulnerable, | 12.4(19a)   |
      | 12.2BY     | release     |             |
      |            | 12.2(8)BY   | 12.4(19b)   |
      |            | and later   |             |
      |            | are not     |             |
      |            | vulnerable; |             |
      |            | first fixed |             |
      |            | in 12.4     |             |
      |------------+-------------+-------------|
      | 12.2BZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2CX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2CY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2CZ     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.2DA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2DD     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2DX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EW     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EWA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2EZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2FX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2FY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2FZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXB    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXD    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXE    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2IXF    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2JA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2JK     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2MB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2MC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2S      | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SB     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SBC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SCA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SE     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEB    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SED    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEE    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEF    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SEG    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SG     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SGA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SL     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SM     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SO     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SRA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SRB    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SRC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SV     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SVA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SVC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SVD    | 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  |             |
      |------------+-------------+-------------|
      | 12.2SXH    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SXI    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2SZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2T      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.2(8)     |             |
      |            | TPC10d are  |             |
      |            | vulnerable, |             |
      | 12.2TPC    | release     |             |
      |            | 12.2(8)     |             |
      |            | TPC10d and  |             |
      |            | later are   |             |
      |            | not         |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.2UZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XB     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XC     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2XD     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XE     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XF     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XG     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2XH     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XI     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XJ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XK     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XL     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2XM     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XN     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XNA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XO     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XQ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XR     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2XS     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XT     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2XU     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 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  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YJ     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2YK     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YL     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YM     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YN     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.2(18)    |
      |            | migrate to  | SXF15;      |
      | 12.2YO     | any release | Available   |
      |            | in 12.2SY   | on          |
      |            |             | 08-AUG-08   |
      |------------+-------------+-------------|
      | 12.2YP     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YQ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YR     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YS     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YT     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YU     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2YV     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2YW     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2YZ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2ZA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2ZB     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.2ZC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2ZD     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2ZE     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2ZF     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.2ZG     | first fixed |             |
      |            | in 12.4T    | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.2ZH     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.2ZJ     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.2ZL     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.2ZP     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2ZU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2ZY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.2ZYA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |  Affected  | First Fixed | Recommended |
      | 12.3-Based |   Release   |   Release   |
      |  Releases  |             |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3       | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3B      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.3BC     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3BW     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 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; | 12.4(19a)   |
      | 12.3T      | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.3TPC    | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.3VA     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3XA     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XB     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3XC     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XD     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3XE     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XF     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3XG     | first fixed |             |
      |            | in 12.4T    | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XH     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.3XI     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |            |             | 12.3(14)    |
      |            |             | YX12        |
      |            | Vulnerable; |             |
      | 12.3XJ     | first fixed | 12.4(20)T;  |
      |            | in 12.3YX   | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XK     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XQ     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3XR     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(19a)   |
      | 12.3XS     | first fixed |             |
      |            | in 12.4     | 12.4(19b)   |
      |------------+-------------+-------------|
      | 12.3XU     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            |             | 12.3(14)    |
      |            |             | YX12        |
      |            | Vulnerable; |             |
      | 12.3XW     | first fixed | 12.4(20)T;  |
      |            | in 12.3YX   | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.3XY     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            |             | 12.4(19a)   |
      |            |             |             |
      |            | Vulnerable; | 12.4(19b)   |
      | 12.3YA     | first fixed |             |
      |            | in 12.4     | 12.4(20)T;  |
      |            |             | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YD     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            |             | 12.3(14)    |
      |            |             | YX12        |
      |            | Vulnerable; |             |
      | 12.3YF     | first fixed | 12.4(20)T;  |
      |            | in 12.3YX   | Available   |
      |            |             | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YG     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YH     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YI     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.3YJ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YK     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Releases    |             |
      |            | prior to    |             |
      |            | 12.3(14)    |             |
      |            | YM12 are    |             |
      |            | vulnerable, | 12.3(14)    |
      | 12.3YM     | release     | YM12        |
      |            | 12.3(14)    |             |
      |            | YM12 and    |             |
      |            | later are   |             |
      |            | not         |             |
      |            | vulnerable; |             |
      |------------+-------------+-------------|
      | 12.3YQ     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YS     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.3YT     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      |            | Vulnerable; |             |
      | 12.3YU     | first fixed |             |
      |            | in 12.4XB   |             |
      |------------+-------------+-------------|
      | 12.3YX     | 12.3(14)    | 12.3(14)    |
      |            | YX12        | YX12        |
      |------------+-------------+-------------|
      | 12.3YZ     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |  Affected  | First Fixed | Recommended |
      | 12.4-Based |   Release   |   Release   |
      |  Releases  |             |             |
      |------------+-------------+-------------|
      |            | 12.4(18b)   |             |
      |            |             |             |
      |            | 12.4(19a)   | 12.4(19a)   |
      | 12.4       |             |             |
      |            | 12.4(19b)   | 12.4(19b)   |
      |            |             |             |
      |            | 12.4(21)    |             |
      |------------+-------------+-------------|
      | 12.4JA     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4JK     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4JMA    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4JMB    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4JMC    | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4JX     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4MD     | 12.4(15)MD  | 12.4(15)MD  |
      |------------+-------------+-------------|
      | 12.4MR     | 12.4(19)MR  | 12.4(19)MR  |
      |------------+-------------+-------------|
      | 12.4SW     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |            | 12.4(15)T6  |             |
      |            |             | 12.4(20)T;  |
      | 12.4T      | 12.4(20)T;  | Available   |
      |            | Available   | on          |
      |            | on          | 11-JUL-08   |
      |            | 11-JUL-08   |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.4XA     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.4XB     | 12.4(2)XB10 |             |
      |------------+-------------+-------------|
      | 12.4XC     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      |            | 12.4(4)     | 12.4(20)T;  |
      |            | XD11;       | Available   |
      | 12.4XD     | Available   | on          |
      |            | on          | 11-JUL-08   |
      |            | 31-JUL-08   |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.4XE     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.4XF     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4XG     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.4XJ     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      |------------+-------------+-------------|
      | 12.4XK     | Not         |             |
      |            | Vulnerable  |             |
      |------------+-------------+-------------|
      | 12.4XL     | 12.4(15)XL2 | 12.4(15)XL2 |
      |------------+-------------+-------------|
      | 12.4XM     | 12.4(15)XM1 | 12.4(15)XM1 |
      |------------+-------------+-------------|
      | 12.4XN     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.4XQ     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.4XT     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.4XV     | Vulnerable; |             |
      |            | contact TAC |             |
      |------------+-------------+-------------|
      | 12.4XW     | 12.4(11)XW8 | 12.4(11)XW6 |
      |------------+-------------+-------------|
      | 12.4XY     | 12.4(15)XY3 |             |
      |------------+-------------+-------------|
      |            | Vulnerable; | 12.4(20)T;  |
      | 12.4XZ     | first fixed | Available   |
      |            | in 12.4T    | on          |
      |            |             | 11-JUL-08   |
      +----------------------------------------+
      
      Cisco Network Registrar
      +----------------------
      
      +---------------------------------------+
      |   Affected   |                        |
      |   Release    |  First Fixed Release   |
      |    Train     |                        |
      |--------------+------------------------|
      | 6.1.x        | Contact TAC            |
      |--------------+------------------------|
      |              | 6.3.1.1 patch;         |
      | 6.3.x        | available mid-July     |
      |              | 2008                   |
      |--------------+------------------------|
      | 7.0.x        | 7.0.1; available in    |
      |              | mid-July 2008          |
      +---------------------------------------+
      
      Cisco Network Registrar software is available for download at:
      
      http://www.cisco.com/pcgi-bin/Software/Tablebuild/tablebuild.pl/nr-eval
      
      Cisco Application and Content Networking System
      +----------------------------------------------
      
      This issue is fixed in version 5.5.11 of Cisco ACNS software. This
      release will be available for download from www.cisco.com in late July
      2008.
      
      Cisco ACNS 5.5 software is available for download at:
      
      http://www.cisco.com/pcgi-bin/tablebuild.pl/acns55
      
      Workarounds
      ===========
      
      There are no workarounds.
      
      Additional information about identification and mitigation of attacks
      against DNS is in the Cisco Applied Intelligence white paper "DNS Best
      Practices, Network Protections, and Attack Identification," available at
      http://www.cisco.com/web/about/security/intelligence/dns-bcp.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/products/prod_warranties_item09186a008088e31f.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/warp/public/687/Directory/DirTAC.shtml
      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.
      
      Although DNS cache poisoning attacks are not new, security researcher
      Dan Kaminsky of IOActive recently presented a technique that makes DNS
      cache poisoning attacks more likely to succeed. Cisco would like to
      thank Dan Kaminsky for notifying vendors about his findings.
      
      Note that vulnerability information for Cisco IOS Software is being
      provided in this advisory outside of the announced publication schedule
      for Cisco IOS Software described at http://www.cisco.com/go/psirt due to
      industry-wide disclosure of the vulnerability.
      
      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-20080708-dns.shtml
      
      In addition to worldwide web posting, a text version of this notice is
      clear-signed with the Cisco PSIRT PGP key and is posted to the following
      e-mail and Usenet news recipients.
      
        * cust-security-announce at cisco dot com
        * first-teams at first dot org
        * bugtraq at securityfocus dot com
        * vulnwatch at vulnwatch dot org
        * cisco at spot dot colorado dot edu
        * cisco-nsp at puck dot nether dot net
        * full-disclosure at lists.grok dot org dot uk
        * comp.dcom.sys.cisco at newsgate dot cisco dot com
      
      Future updates of this advisory, if any, will be placed on Cisco's
      worldwide website, but may or may not be actively announced on mailing
      lists or newsgroups. Users concerned about this problem are encouraged
      to check the above URL for any updates.
      
      Revision History
      ================
      
      +-----------------------------------------------------------+
      | Revision 1.0  | 2008-July-08  | Initial public release    |
      +-----------------------------------------------------------+
      
      Cisco Security Procedures
      =========================
      
      Complete information on reporting security vulnerabilities in
      Cisco products, obtaining assistance with security incidents, and
      registering to receive security information from Cisco, is available
      on Cisco's worldwide website at
      http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html.
      This includes instructions for press inquiries regarding Cisco security
      notices. All Cisco security advisories are available at
      http://www.cisco.com/go/psirt.
      
      +--------------------------------------------------------------------
      Copyright 2007-2008 Cisco Systems, Inc. All rights reserved.
      +--------------------------------------------------------------------
      
      Updated: Jul 08, 2008                             Document ID: 107064
      
      +--------------------------------------------------------------------
      
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