Cisco IOS Software Protocol Translation Vulnerability

Summary

• The Cisco IOS Software Protocol Translation (PT) feature contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
  
  Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available.
  
  This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-pt
  

  Note: The March 27, 2013, Cisco IOS Software Security Advisory bundled publication includes seven Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the March 2013 bundled publication.

  Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication" at the following link:

  http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar13.html

  
  

Affected Products

• This vulnerability affects a device that is running an affected version of Cisco IOS Software and has either a vulnerable protocol translation configuration or a Telnet-to-PAD protocol translation ruleset configured.
  

  Vulnerable Products

  A vulnerable protocol translation configuration occurs when one-step protocol translation is configured, and is using the default incoming connection port number (Telnet port 23). If the one-step protocol translation incoming connection port number is configured for any ports other than the default, the device is not vulnerable.
  
  To identify a vulnerable protocol translation configuration, log in to the device and issue the show translate command-line interface (CLI) command. The following example shows a device configured for protocol translation with at least one incoming TCP/IP protocol translation connection configured for default incoming connection port number. If the output does not contain a translate entry that has Port 23 listed, the device is not vulnerable. The following output shows a device with a vulnerable configuration:
  

  Terminal_Server#show translate
  
  Translate From: TCP 192.168.0.1 Port 23
            To:   X25 1234
            0/0 users active, 0 peak, 0 total, 0 failures
  
  Translate From: TCP 192.168.100.25 Port 1025
            To:   X25 1235
            0/0 users active, 0 peak, 0 total, 0 failures
  Terminal_Server#

  The following shows a device with a non vulnerable configuration:
  

  Terminal_Server#show translate
  
  Translate From: TCP 192.168.0.1 Port 1025
            To:   X25 1234
            0/0 users active, 0 peak, 0 total, 0 failures
  
  Translate From: TCP 192.168.100.25 Port 1026
            To:   X25 1235
            0/0 users active, 0 peak, 0 total, 0 failures
  Terminal_Server#

  To determine whether a Telnet-to-PAD protocol translation ruleset is configured, log in to the device and issue the show running-config CLI command. If the output contains the configuration command translate use telnet and has a defined ruleset with the telnet to pad command, the device is vulnerable. The following example shows a vulnerable Telnet-to-PAD protocol translation ruleset configured:

  Terminal_Server#show running-config | begin use telnet
  translate use telnet 192.168.0.1
  translate ruleset example_ruleset from telnet to pad
   description *** example translation ruleset ***
   match source-addr 192.168.100.1
   set pad dest-addr 4321
  
  Terminal_Server#

  To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the show version command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the show version command or may provide different output.

  The following example identifies a Cisco product that is running Cisco IOS Software Release 15.0(1)M1 with an installed image name of C3900-UNIVERSALK9-M:

  Router> show version 
  Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)
  Technical Support: http://www.cisco.com/techsupport
  Copyright (c) 1986-2009 by Cisco Systems, Inc.
  Compiled Wed 02-Dec-09 17:17 by prod_rel_team

  !--- output truncated 

  Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS and NX-OS Software Reference Guide" at http://www.cisco.com/web/about/security/intelligence/ios-ref.html.

  
  

  Products Confirmed Not Vulnerable

  The following products have been confirmed not vulnerable:
  

  • Cisco IOS XE Software
  • Cisco IOS XR Software
  • Cisco NX-OS Software

  No other Cisco products are currently known to be affected by this vulnerability.
  

Details

• Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
  
  The vulnerability is due to insufficient validation of TCP connection information when a vulnerable protocol translation configuration in the affected software is in use. An attacker could exploit this vulnerability by trying to connect to the affected protocol translation resource on the affected device. An exploit could allow the attacker to cause a reload of the affected device.
  
  A TCP three-way handshake is not required to exploit this vulnerability. Transit traffic will not trigger this vulnerability.
  
  This vulnerability has been documented in Cisco bug ID CSCtz35999 (registered customers only) and has been assigned the Common Vulnerabilities and Exposures (CVE) ID CVE-2013-1147.
  

Workarounds

• The following workarounds are available to mitigate this vulnerability:

  Change the Incoming Connection Default Port Number

  For devices that are configured with one-step protocol translation with the default incoming connection port number, an administrator can change the default incoming connection port number to be any suitable value other than port 23. The following example shows changing the default incoming connection port number:
  Original vulnerable configuration:

  translate tcp 192.168.0.3 x25 1234

  Configuration with default incoming connection port number changed:
  

  translate tcp 192.168.0.3 port 1025 x25 1234

  Skip Ports in Ruleset

  When using rulesets ignore ports 514 and 544:

  translate ruleset example_ruleset from telnet to pad
  description *** example translation using a ruleset ***
  match source-addr 192.168.0.1
  set pad dest-addr 1234
  skip dest-port 514
  skip dest-port 544

  Infrastructure Access Control Lists

  Although it is often difficult to block traffic transiting the network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the network border. Infrastructure access control lists (iACLs) are considered a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for this specific vulnerability. The following ACL example should be included as part of the deployed infrastructure access-list, which will protect all devices with IP addresses in the configured protocol translation incoming IP address range.

  A sample access list for devices running Cisco IOS follows:

  !--- Deny protocol translation services packets with source of 514|544.

  access-list 150 deny tcp any CONFIGURED_PROTOCOL_TRANSLATION_ADDRESSES MASK eq 514
  access-list 150 deny tcp any CONFIGURED_PROTOCOL_TRANSLATION_ADDRESSES MASK eq 544

  !--- Permit all other traffic to transit the device.

  access-list 150 permit IP any any

  interface serial 2/0

  ip access-group 150 in

  The white paper "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper is at http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801a1a55.shtml.
  
  Additional mitigations that can be deployed on Cisco devices within the network are available in the companion document "Identifying and Mitigating Exploitation of the Cisco IOS Software Protocol Translation Vulnerability," which is available at http://tools.cisco.com/security/center/viewAMBAlert.x?alertId=28001.

Fixed Software

• When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.

  In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

  Cisco IOS Software

  Each row of the following Cisco IOS Software table corresponds to a Cisco IOS Software train. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release column. The First Fixed Release for All Advisories in the March 2013 Bundled Publication column lists the earliest possible releases that correct all the published vulnerabilities in the Cisco IOS Software Security Advisory bundled publication. Cisco recommends upgrading to the latest available release where possible.

  The Cisco IOS Software Checker allows customers to search for Cisco Security Advisories that address specific Cisco IOS Software releases. This tool is available on the Cisco Security (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x

  
  
  

  Major Release	Availability of Repaired Releases
  Affected 12.0-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  There are no affected 12.0 based releases
  Affected 12.2-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  There are no affected 12.2 based releases
  Affected 12.3-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  12.3	Not vulnerable	Not vulnerable
  12.3B	Not vulnerable	Not vulnerable
  12.3BC	Not vulnerable	Not vulnerable
  12.3BW	Not vulnerable	Not vulnerable
  12.3JA	Not vulnerable	Not vulnerable
  12.3JEA	Not vulnerable	Not vulnerable
  12.3JEB	Not vulnerable	Not vulnerable
  12.3JEC	Not vulnerable	Not vulnerable
  12.3JED	Not vulnerable	Not vulnerable
  12.3JEE	Not vulnerable	Not vulnerable
  12.3JK	Releases up to and including 12.3(2)JK3 are not vulnerable. Releases 12.3(8)JK1 and later are not vulnerable. First fixed in Release 15.0M *	Releases up to and including 12.3(2)JK3 are not vulnerable. Releases 12.3(8)JK1 and later are not vulnerable. First fixed in Release 15.0M *
  12.3JL	Not vulnerable	Not vulnerable
  12.3JX	Not vulnerable	Not vulnerable
  12.3T	Vulnerable; First fixed in Release 15.0M * Releases up to and including 12.3(7)T12 are not vulnerable.	Vulnerable; First fixed in Release 15.0M * Releases up to and including 12.3(2)T9 are not vulnerable.
  12.3TPC	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.3XA	Not vulnerable	Not vulnerable
  12.3XB	Not vulnerable	Not vulnerable
  12.3XC	Not vulnerable	Not vulnerable
  12.3XD	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XE	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XF	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.3XG	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XI	Not vulnerable	Vulnerable; First fixed in Release 12.2SB
  12.3XJ	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XK	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XL	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3XQ	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XR	Vulnerable; First fixed in Release 15.0M * Releases up to and including 12.3(7)XR are not vulnerable.	Vulnerable; First fixed in Release 15.0M *
  12.3XU	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3XW	Vulnerable; migrate to any release in 12.4XN	Vulnerable; First fixed in Release 15.0M *
  12.3XX	Vulnerable; First fixed in Release 15.0M * Releases up to and including 12.3(8)XX1 are not vulnerable.	Vulnerable; First fixed in Release 15.0M *
  12.3XY	Not vulnerable	Not vulnerable
  12.3XZ	Not vulnerable	Not vulnerable
  12.3YD	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3YF	Note: Releases prior to 12.3(11)YF1 are vulnerable; Releases 12.3(11)YF1 and later are not vulnerable.	Vulnerable; First fixed in Release 15.0M *
  12.3YG	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YI	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YJ	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3YK	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YM	Releases up to and including 12.3(14)YM10 are not vulnerable. Releases 12.3(14)YM12 and later are not vulnerable. First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YQ	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.3YS	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YT	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.3YU	Vulnerable; First fixed in Release 15.0M * Releases up to and including 12.3(14)YU are not vulnerable.	Vulnerable; First fixed in Release 15.0M *
  12.3YX	Releases 12.3(14)YX4 and 12.3(14)YX9 are vulnerable; Releases 12.3(14)YX10 and later are not vulnerable. Migrate to any release in 12.4XN.	Vulnerable; First fixed in Release 15.0M *
  12.3YZ	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.3ZA	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  Affected 12.4-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  12.4	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4GC	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4JA	Not vulnerable	Not vulnerable
  12.4JAL	Not vulnerable	Not vulnerable
  12.4JAM	Not vulnerable	Releases prior to 12.4(25e)JAM are vulnerable; Releases 12.4(25e)JAM and later are not vulnerable. Migrate to any release in 12.4JAN12.4(25e)JAM
  12.4JAX	Not vulnerable	Not vulnerable
  12.4JAZ	Not vulnerable	Not vulnerable
  12.4JDA	Not vulnerable	Not vulnerable
  12.4JDC	Not vulnerable	Not vulnerable
  12.4JDD	Not vulnerable	Not vulnerable
  12.4JDE	Not vulnerable	Not vulnerable
  12.4JHA	Not vulnerable	Not vulnerable
  12.4JHB	Not vulnerable	Not vulnerable
  12.4JHC	Not vulnerable	Not vulnerable
  12.4JK	Not vulnerable	Not vulnerable
  12.4JL	Not vulnerable	Not vulnerable
  12.4JX	Not vulnerable	Not vulnerable
  12.4JY	Not vulnerable	Not vulnerable
  12.4JZ	Not vulnerable	Not vulnerable
  12.4MD	Not vulnerable	Vulnerable; First fixed in Release 12.4MDB
  12.4MDA	Not vulnerable	Vulnerable; First fixed in Release 12.4MDB
  12.4MDB	Not vulnerable	12.4(24)MDB13
  12.4MR	Releases up to and including 12.4(12)MR1 are not vulnerable.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4MRA	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4MRB	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4SW	Releases prior to 12.4(15)SW9a are vulnerable; Releases 12.4(15)SW9a and later are not vulnerable. First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4T	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XA	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XB	Releases up to and including 12.4(2)XB5 are not vulnerable. Releases 12.4(2)XB7 and later are not vulnerable. First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XC	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XD	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XE	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XF	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.4XG	Releases up to and including 12.4(9)XG1 are not vulnerable. Releases 12.4(9)XG3 and later are not vulnerable. First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XJ	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XK	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XL	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4XM	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.4XN	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4XP	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4XQ	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.4XR	Not vulnerable	Vulnerable; First fixed in Release 15.0M *
  12.4XT	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XV	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4XW	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XY	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4XZ	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4YA	Vulnerable; First fixed in Release 15.0M *	Vulnerable; First fixed in Release 15.0M *
  12.4YB	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4YD	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  12.4YE	Not vulnerable	12.4(24)YE3e
  12.4YG	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  Affected 15.0-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  15.0EB	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.0ED	Not vulnerable	Not vulnerable
  15.0EY	Not vulnerable	Not vulnerable
  15.0M	15.0(1)M10 *	15.0(1)M10 *
  15.0MR	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.0S	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Vulnerable; First fixed in Release 15.1S Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.0SE	Not vulnerable	15.0(2)SE1
  15.0SG	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.0SQA	Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.0SY	Not vulnerable	15.0(1)SY4
  15.0XA	Vulnerable; First fixed in Release 15.1M	Vulnerable; First fixed in Release 15.1M
  15.0XO	Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  Affected 15.1-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  15.1EY	Not vulnerable	Vulnerable; First fixed in Release 15.2S
  15.1GC	15.1(4)GC1	15.1(4)GC1
  15.1M	15.1(4)M6	15.1(4)M6
  15.1MR	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1MRA	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1S	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	15.1(3)S5 † See footnote Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.1SG	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.1SNG	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1SNH	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1SNI	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1SVA	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.1SVC	Not vulnerable	Not vulnerable
  15.1SY	Not vulnerable	15.1(1)SY1; Available on 24-MAY-13
  15.1T	Vulnerable; First fixed in Release 15.1M	Vulnerable; First fixed in Release 15.1M
  15.1XB	Vulnerable; First fixed in Release 15.1M	Vulnerable; First fixed in Release 15.1M
  Affected 15.2-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  15.2GC	Vulnerable; migrate to any release in 15.4T	Vulnerable; migrate to any release in 15.4T
  15.2GCA	Vulnerable; migrate to any release in 15.4T	Vulnerable; migrate to any release in 15.4T
  15.2JA	15.2(2)JA1 15.2(4)JA; Available on 29-APR-13	15.2(2)JA
  15.2JAX	Not vulnerable	Not vulnerable
  15.2JB	Not vulnerable	Not vulnerable
  15.2JN	Not vulnerable	Not vulnerable
  15.2M	15.2(4)M3	15.2(4)M3
  15.2S	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	15.2(4)S2 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.2SA	Not vulnerable	15.2(2)SA
  15.2SNG	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.2SNH	Not vulnerable	Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
  15.2SNI	Not vulnerable	Not vulnerable
  15.2T	15.2(1)T4; Available on 03-MAY-13 15.2(2)T3 15.2(3)T3	15.2(1)T4; Available on 03-MAY-13 15.2(2)T3 15.2(3)T3
  Affected 15.3-Based Releases	First Fixed Release	First Fixed Release for All Advisories in the March 2013 Bundled Publication
  15.3S	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability	Not vulnerable Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
  15.3T	15.3(1)T1; Available on 29-MAR-13 15.3(2)T; Available on 29-MAR-13	15.3(1)T1; Available on 29-MAR-1315.3(2)T; Available on 29-MAR-13

  
  * Cisco IOS Software Release 15.0M will reach End of Software Maintenance on April 1, 2013, and no additional rebuilds will occur. Please review the End-of-Life Notice for additional information. Customers are advised to consider migrating to Cisco IOS Software Release 15.1M.
  

  † For Cisco 7600 Series Routers, the first fixed release for all Cisco Security Advisories in the March 2013 bundled publication is Cisco IOS Software Release 15.1(3)S5. For Cisco 7200 and 7300 Series Routers, the first fixed release for all advisories in the March 2013 bundled publication is Cisco IOS Software Release 15.1(3)S5a, which will be available on April 15, 2013.

  Cisco IOS XE Software

  Cisco IOS XE Software is not affected by the vulnerability that is disclosed in this advisory.
  
  

  Cisco IOS XR Software

  Cisco IOS XR Software is not affected by the vulnerability that is disclosed in this advisory.
  
  

Exploitation and Public Announcements

• The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

  This vulnerability was discovered when handling customer service requests.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-pt

Revision History

• Revision 1.1	2013-April-11	Updated data for 15.0EY in bundle first fixed column.
  Revision 1.0	2013-March-27	Initial public release.

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