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Cisco IOS Software Command Authorization Bypass

Advisory ID: cisco-sa-20120328-pai

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-pai

Revision 1.0

For Public Release 2012 March 28 16:00  UTC (GMT)


Summary

A vulnerability exists in the Cisco IOS Software that may allow a remote application or device to exceed its authorization level when authentication, authorization, and accounting (AAA) authorization is used. This vulnerability requires that the HTTP or HTTPS server is enabled on the Cisco IOS device.

Products that are not running Cisco IOS Software are not vulnerable.

Cisco has released free software updates that address these vulnerabilities. 

The HTTP server may be disabled as a workaround for the vulnerability described in this advisory.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-pai

Note: The March 28, 2012, Cisco IOS Software Security Advisory bundled publication includes nine Cisco Security Advisories. Each 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 vulnerabilities in the March 2012 bundled publication.

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

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar12.html


Affected Products


Vulnerable Products

Any device running Cisco IOS Software release after 12.2 that has an HTTP or HTTPS server configured is affected by this vulnerability if AAA authorization is used. 
To determine if an HTTP or HTTP server is configured with an HTTP or HTTPS server, issue the show ip http server status | include status command. The following example illustrates a Cisco IOS device with an HTTPS server enabled and the HTTP server disabled.
    Router> show ip http server status | include status
     HTTP server status: Disabled
     HTTP secure server status: Enabled
    
To determine if AAA authorization is used, an administrator can log in to the device and issue the show run | include aaa authorization command in privileged EXEC mode. If there is an entry that shows aaa authorization commands, as shown in the following example, then AAA authorization is configured.
    Router# show run | include aaa authorization commands
     aaa authorization commands 0 default local group tacacs+
     aaa authorization commands 1 default group tacacs+
     aaa authorization commands 15 default local
    

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

If you are not running Cisco IOS or IOS XE Software, you are not affected by this vulnerability. Devices that are not using AAA authorization or that do not have an HTTP or HTTPS server configured are not affected by this vulnerability. 

Cisco IOS XR is not affected by this vulnerability.

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

Details

Cisco IOS Software allows remote applications to administer and monitor devices running Cisco IOS Software over an HTTP or HTTPS connection. 

A vulnerability exists that may allow the Cisco IOS command authorization to be bypassed, allowing a remote, authenticated HTTP or HTTPS session to execute any Cisco IOS command that is configured for their authorization level. This vulnerability does not allow unauthenticated access; a valid username and password are required to successfully exploit this vulnerability. Additionally, the vulnerability does not allow a user to execute commands that are not configured for their privilege level.

The HTTP server is enabled by default for cluster configurations and on the following Cisco switches: Catalyst 3700 series, Catalyst 3750 series, Catalyst 3550 series, Catalyst 3560 series, and Catalyst 2950 series.

More information on AAA authorization can be found at: http://www.cisco.com/en/US/docs/ios/12_2t/secure/command/reference/sftauth.html.

Releases of Cisco IOS Software after release 12.2 are potentially vulnerable. Please refer to the release table below for more information.

This vulnerability is documented as Cisco Bug ID CSCtr91106 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0384.

Vulnerability Scoring Details

Cisco has scored the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0.

CVSS is a standards-based scoring method that conveys vulnerability severity and helps organizations determine the urgency and priority of a response.

Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks.

Cisco has provided additional information regarding CVSS at the following link:

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html

Cisco has also provided a CVSS calculator to compute the environmental impact for individual networks at the following link:

http://intellishield.cisco.com/security/alertmanager/cvss

 

Command Authorization Fails for commands delivered over HTTP

Calculate the environmental score of CSCtr91106

CVSS Base Score - 8.5

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Medium

Single

Complete

Complete

Complete

CVSS Temporal Score - 7.0

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed


Impact

Successful exploitation of the vulnerability may allow the Cisco IOS command authorization to be bypassed, allowing a remote, authenticated HTTP or HTTPS session to execute any Cisco IOS command that is configured for its authorization level.

Software Versions and Fixes

When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses 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 2012 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 Intelligence Operations (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 2012 Cisco IOS Software Security Advisory 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 2012 Cisco IOS Software Security Advisory Bundled Publication
12.2 Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2B Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2BC Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2BW Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2BX Not vulnerable
Vulnerable; First fixed in Release 12.2SB
12.2BY Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2BZ Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2CX Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2CY Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2CZ Not vulnerable
Vulnerable; First fixed in Release 12.0S
12.2DA Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2DD Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2DX Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2EU Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EW Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
Releases up to and including 12.2(20)EWA4 are not vulnerable.
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EWA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
Releases up to and including 12.2(20)EWA4 are not vulnerable.
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EX Vulnerable; First fixed in Release 15.0SE
Releases up to and including 12.2(25)EX1 are not vulnerable.
Vulnerable; First fixed in Release 15.0SE
12.2EY 12.2(52)EY4
12.2(58)EY2
12.2(52)EY4
12.2EZ Vulnerable; First fixed in Release 15.0SE
Vulnerable; First fixed in Release 15.0SE
12.2FX Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2FY Vulnerable; First fixed in Release 15.0SE
Vulnerable; First fixed in Release 15.0SE
12.2FZ Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2IRA Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRB Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRC Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRD Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRE Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRF Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2IRG 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.
12.2IRH 12.2(33)IRH1
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXA Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXB Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXC Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXD Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXE Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXF Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXG Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXH Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2JA Not vulnerable
Not vulnerable
12.2JK Not vulnerable
Not vulnerable
12.2MB Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2MC Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2MRA Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2MRB 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.
12.2S Not vulnerable
Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.0S
12.2SB 12.2(33)SB12
12.2(33)SB12
12.2SBC Not vulnerable
Vulnerable; First fixed in Release 12.2SRE
12.2SCA Vulnerable; First fixed in Release 12.2SCE
Vulnerable; First fixed in Release 12.2SCE
12.2SCB Vulnerable; First fixed in Release 12.2SCE
Vulnerable; First fixed in Release 12.2SCE
12.2SCC Vulnerable; First fixed in Release 12.2SCE
Vulnerable; First fixed in Release 12.2SCE
12.2SCD Vulnerable; First fixed in Release 12.2SCE
Vulnerable; First fixed in Release 12.2SCE
12.2SCE 12.2(33)SCE5
12.2(33)SCE6
12.2SCF 12.2(33)SCF2
12.2(33)SCF2
12.2SE 12.2(55)SE5

12.2(55)SE5 *
12.2SEA Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SEB Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SEC Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SED Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SEE Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SEF Vulnerable; First fixed in Release 12.2SE
Vulnerable; First fixed in Release 15.0SE
12.2SEG Vulnerable; First fixed in Release 15.0SE
Vulnerable; First fixed in Release 15.0SE
12.2SG 12.2(53)SG7; Available on 07-MAY-12
12.2(53)SG7; Available on 07-MAY-12
12.2SGA Vulnerable; First fixed in Release 12.2SG
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SL Not vulnerable
Not vulnerable
12.2SM Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SO Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SQ 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.
12.2SRA Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2SRB Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2SRC Vulnerable; First fixed in Release 12.2SRD
Vulnerable; First fixed in Release 12.2SRE
12.2SRD 12.2(33)SRD8
Vulnerable; First fixed in Release 12.2SRE
12.2SRE 12.2(33)SRE6
12.2(33)SRE6
12.2STE 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.
12.2SU Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2SV Not vulnerable
Releases up to and including 12.2(18)SV2 are not vulnerable.
12.2SVA Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVC Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVD Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVE Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SW Not vulnerable
Vulnerable; First fixed in Release 12.4T
12.2SX Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXA Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXB Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXD Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXE Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXF Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory. 
12.2SXH 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. 
12.2SXI 12.2(33)SXI9
12.2(33)SXI9
12.2SXJ 12.2(33)SXJ2
12.2(33)SXJ2
12.2SY 12.2(50)SY2; Available on 11-JUN-12
Releases up to and including 12.2(14)SY5 are not vulnerable.
12.2(50)SY2; Available on 11-JUN-12
12.2SZ Not vulnerable
Vulnerable; First fixed in Release 12.0S
12.2T Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2TPC Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2XA Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XB Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XC Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XD Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XE Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XF Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XG Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XH Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XI Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XJ Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XK Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XL Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XM Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XNA Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XNB Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XNC Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XND Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XNE Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XNF Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
12.2XO Vulnerable; First fixed in Release 12.2SG
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2XQ Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XR Not vulnerable
Releases prior to 12.2(15)XR are vulnerable; Releases 12.2(15)XR and later are not vulnerable. First fixed in Release 15.0M
12.2XS Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XT Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XU Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XV Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2XW Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2YA Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2YC Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YD Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YE Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YK Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YO Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YP Not vulnerable
Vulnerable; First fixed in Release 15.0M
Releases up to and including 12.2(8)YP are not vulnerable.
12.2YT Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YW Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YX Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YY Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YZ Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZA Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZB Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZC Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZD Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZE Not vulnerable
Vulnerable; First fixed in Release 15.0M
12.2ZH Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.2ZJ Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZP Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZU Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZX Not vulnerable
Vulnerable; First fixed in Release 12.2SRE
12.2ZY Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZYA Not vulnerable
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
Affected 12.3-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.3 Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3B Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3BC Vulnerable; First fixed in Release 12.2SCE
Vulnerable; First fixed in Release 12.2SCE
12.3BW Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3JA Vulnerable; First fixed in Release 12.4JA
Vulnerable; First fixed in Release 12.4JA
12.3JEA 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.
12.3JEB 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.
12.3JEC 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.
12.3JED 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.
12.3JK Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3JL 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.
12.3JX Not vulnerable
Not vulnerable
12.3T Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3TPC 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.
12.3VA Not vulnerable
Not vulnerable
12.3XA Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XB 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.
12.3XC Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XD Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XE Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XF 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.
12.3XG Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XI Vulnerable; First fixed in Release 12.2SB
Vulnerable; First fixed in Release 12.2SRE
12.3XJ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3XK Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XL Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3XQ Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XR Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XU Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 12.4T
12.3XW Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3XX Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XY Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3XZ Vulnerable; First fixed in Release 12.4
Vulnerable; First fixed in Release 15.0M
12.3YD Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YF Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YG Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YI Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YJ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YK Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YM Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YQ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YS Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YT Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YU Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.3YX Vulnerable; First fixed in Release 12.4T
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 12.4T
Vulnerable; First fixed in Release 15.0M
Affected 12.4-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.4 12.4(25g); Available on 19-SEP-12
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 12.4(23c)JA4
12.4(25d)JA2; Available on 01-AUG-12
12.4(25e)JA
12.4(23c)JA412.4(25e)JA
12.4JAX Vulnerable; First fixed in Release 12.4JA
Vulnerable; First fixed in Release 12.4JA
12.4JDA 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.
12.4JDC 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.
12.4JDD 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.
12.4JDE 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.
12.4JHA 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.
12.4JHB 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.
12.4JHC 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.
12.4JK 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.
12.4JL 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.
12.4JX Vulnerable; First fixed in Release 12.4JA
Vulnerable; First fixed in Release 12.4JA
12.4JY Vulnerable; First fixed in Release 12.4JA
Vulnerable; First fixed in Release 12.4JA
12.4JZ Vulnerable; First fixed in Release 12.4JA
Vulnerable; First fixed in Release 12.4JA
12.4MD 12.4(22)MD3; Available on 30-MAR-12
12.4(22)MD3; Available on 30-MAR-12
12.4MDA 12.4(24)MDA11
12.4(24)MDA11
12.4MDB 12.4(24)MDB5a
12.4(24)MDB5a
12.4MDC Not vulnerable
Not vulnerable
12.4MR 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.
12.4MRA 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 12.4T
Vulnerable; First fixed in Release 15.0M
12.4SW 12.4(15)SW8a
Vulnerable; First fixed in Release 15.0M
12.4T 12.4(15)T17
12.4(24)T7
12.4(15)T17
12.4(24)T7

12.4XA Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XB Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 12.4T
12.4XC Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XD Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XE Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XF Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XG Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XJ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XK Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XL 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.
12.4XM Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XN 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.
12.4XP 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.
12.4XQ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XR Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 12.4T
12.4XT Vulnerable; First fixed in Release 12.4T
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 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XY Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4XZ Vulnerable; First fixed in Release 12.4T
Vulnerable; First fixed in Release 15.0M
12.4YA Vulnerable; First fixed in Release 12.4T
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 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.
12.4YE 12.4(24)YE3d
12.4(24)YE3d
12.4YG 12.4(24)YG4
12.4(24)YG4
Affected 15.0-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
15.0M 15.0(1)M8
15.0(1)M8
15.0MR 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.
15.0MRA 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.
15.0S 15.0(1)S5 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.0(1)S5 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.0SA Not vulnerable
Not vulnerable
15.0SE 15.0(1)SE1
15.0(2)SE; Available on 06-AUG-12
15.0(1)SE1
15.0SG 15.0(2)SG2 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.0(2)SG2 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.0SY 15.0(1)SY1
15.0(1)SY1
15.0XA Vulnerable; First fixed in Release 15.1T
Vulnerable; First fixed in Release 15.1T
15.0XO Vulnerable; First fixed in Release 15.0SG Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
Vulnerable; First fixed in Release 15.0SG 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 2012 Cisco IOS Software Security Advisory Bundled Publication
15.1EY 15.1(2)EY1a
15.1(2)EY2
15.1GC 15.1(2)GC2
15.1(2)GC2
15.1M 15.1(4)M2

15.1(4)M4; Available on 30-MAR-12
15.1MR 15.1(1)MR3
Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
15.1S 15.1(3)S2 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.1(3)S2 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.1SG Not vulnerable
Not vulnerable
15.1SNG 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.
15.1SNH Not vulnerable
Not vulnerable
15.1T 15.1(1)T4
15.1(2)T5; Available on 27-APR-12
15.1(3)T3
15.1(3)T3
15.1XB Vulnerable; First fixed in Release 15.1T
Vulnerable; First fixed in Release 15.1T
Affected 15.2-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
15.2GC 15.2(1)GC1
15.2(1)GC2
15.2S 15.2(1)S1 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.2(1)S1 Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.2T 15.2(1)T1
15.2(2)T
15.2(2)T1
15.2(1)T215.2(2)T115.2(3)T; Available on 30-MAR-12

* Cisco Catalyst 3550 Series Switches support the Internet Key Exchange (IKE) feature and are vulnerable to Cisco bug ID CSCts38429 when the devices are running Layer 3 images; however, this product reached the End of Software Maintenance milestone.  Cisco 3550 Series SMI Switches that are running Layer 2 images do not support IKE and are not vulnerable.  No other Cisco devices that run 12.2SE-based software are vulnerable.

Cisco IOS XE Software

Cisco IOS XE Software is affected by the vulnerability that is disclosed in this document.

Cisco IOS XE Software Release First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
2.1.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
2.2.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
2.3.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
2.4.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
2.5.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
2.6.x Vulnerable; migrate to 3.1.2S or later. Vulnerable; migrate to 3.4.2S or later.
3.1.xS 3.1.2S Vulnerable; migrate to 3.4.2S or later.
3.1.xSG Vulnerable; migrate to 3.2.2SG or later. Vulnerable; migrate to 3.2.2SG or later.
3.2.xS Vulnerable; migrate to 3.4.2S or later. Vulnerable; migrate to 3.4.2S or later.
3.2.xSG 3.2.2SG 3.2.2SG
3.3.xS Vulnerable; migrate to 3.4.2S or later. Vulnerable; migrate to 3.4.2S or later.
3.2.xSG Not vulnerable Not vulnerable
3.4.xS 3.4.2S 3.4.2S
3.5.xS 3.5.1S 3.5.1S
3.6.xS Not vulnerable Not vulnerable

For a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and Cisco IOS XE 3SG Release Notes.

Cisco IOS XR Software

Cisco IOS XR Software is not affected by any of the vulnerabilities disclosed in the March 2012 Cisco IOS Software Security Advisory Bundled Publication.

Workarounds

If the HTTP and HTTPS servers are not required, they may be disabled with the commands no ip http server and no ip http secure-server.

However, if web services are required, a feature was introduced in 12.3(14)T and later in which selective HTTP and HTTPS services could be enabled or disabled. The WEB_EXEC service provides a facility to configure the device and retrieve the current state of the device from remote clients.

It is possible to disable the WEB_EXEC service while still leaving other HTTP services active. If an installation does not require the use of the WEB_EXEC service, then it may be disabled using the following procedure:
  1. Verify the list of all session modules.
      Router# show ip http server session-module
      HTTP server application session modules:
      Session module Name  Handle Status   Secure-status  Description
      HTTP_IFS              1      Active   Active         HTTP based IOS File Server
      HOME_PAGE             2      Active   Active         IOS Homepage Server
      QDM                   3      Active   Active         QOS Device Manager Server
      QDM_SA                4      Active   Active         QOS Device Manager Signed Applet Server
      WEB_EXEC              5      Active   Active         HTTP based IOS EXEC Server
      IXI                   6      Active   Active         IOS XML Infra Application Server
      IDCONF                7      Active   Active         IDCONF HTTP(S) Server
      XSM                   8      Active   Active         XML Session Manager
      VDM                   9      Active   Active         VPN Device Manager Server
      XML_Api               10     Active   Active         XML Api
      ITS                   11     Active   Active         IOS Telephony Service
      ITS_LOCDIR            12     Active   Active         ITS Local Directory Search
      CME_SERVICE_URL       13     Active   Active         CME Service URL
      CME_AUTH_SRV_LOGIN    14     Active   Active         CME Authentication Server
      IPS_SDEE              15     Active   Active         IOS IPS SDEE Server
      tti-petitioner        16     Active   Active         TTI Petitioner
  2. Create a list of session modules that are required, in this example it would be everything other than WEB_EXEC.
      Router# configuration terminal
      Router(config)# ip http session-module-list exclude_webexec 
      
      HTTP_IFS,HOME_PAGE,QDM,QDM_SA,IXI,IDCONF,XSM,VDM,XML_Api,
      ITS,ITS_LOCDIR,CME_SERVICE_URL,CME_AUTH_SRV_LOGIN,IPS_SDEE,tti-petitioner
  3. Selectively enable HTTP/HTTPS applications that will service incoming HTTP requests from remote clients.
      Router(config)# ip http active-session-modules exclude_webexec
      Router(config)# ip http secure-active-session-modules exclude_webexec
      Router(config)# exit
  4. Verify the list of all session modules, and ensure WEB_EXEC is not active.
      Router# show ip http server session-module 
      HTTP server application session modules: 
      Session module Name  Handle Status   Secure-status  Description 
      HTTP_IFS              1      Active   Active         HTTP based IOS File Server 
      HOME_PAGE             2      Active   Active         IOS Homepage Server 
      QDM                   3      Active   Active         QOS Device Manager Server 
      QDM_SA                4      Active   Active         QOS Device Manager Signed Applet Server 
      WEB_EXEC              5      Inactive Inactive       HTTP based IOS EXEC Server 
      IXI                   6      Active   Active         IOS XML Infra Application Server 
      IDCONF                7      Active   Active         IDCONF HTTP(S) Server 
      XSM                   8      Active   Active         XML Session Manager 
      VDM                   9      Active   Active         VPN Device Manager Server 
      XML_Api               10     Active   Active         XML Api 
      ITS                   11     Active   Active         IOS Telephony Service 
      ITS_LOCDIR            12     Active   Active         ITS Local Directory Search 
      CME_SERVICE_URL       13     Active   Active         CME Service URL 
      CME_AUTH_SRV_LOGIN    14     Active   Active         CME Authentication Server 
      IPS_SDEE              15     Active   Active         IOS IPS SDEE Server 
      tti-petitioner        16     Active   Active         TTI Petitioner 
      
For further information on the selective enabling of applications using an HTTP or secure HTTP server, consult the Cisco IOS network management configuration guide, release 12.4T, at: http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_http_app_enable.html

If the HTTP server and WEB_EXEC service are required, it is a recommended best practice to limit which hosts may access the HTTP server to allow only trusted sources. An access list can be applied to the HTTP server to limit which hosts are permitted access. To apply an access list to the HTTP server, use the following command in global configuration mode: ip http access-class {access-list-number | access-list-name}.

The following example shows an access list that allows only trusted hosts to access the Cisco IOS HTTP server:
    ip access-list standard 20
         permit 192.168.1.0 0.0.0.255
         remark "Above is a trusted subnet"
         remark "Add further trusted subnets or hosts below"
        
    ! (Note: all other access implicitly denied) ! (Apply the access-list to the http server)
    ip http access-class 20
For additional information on configuring the Cisco IOS HTTP server, consult Using the Cisco Web Browser User Interface.

Obtaining Fixed Software

Cisco has released free software updates that addresses the vulnerability described in this advisory. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.

Customers may only install and expect support for feature sets they have purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as set forth at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.

Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades.

Customers with Service Contracts

Customers with contracts should obtain upgraded software through their regular update channels. For most customers, upgrades should be obtained through the Software Center on Cisco.com at http://www.cisco.com.

Customers using Third Party Support Organizations

Customers with Cisco products that 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 organization for assistance with the appropriate course of action.

The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed

Customers without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC):

  • +1 800 553 2447 (toll free from within North America)
  • +1 408 526 7209 (toll call from anywhere in the world)
  • e-mail: tac@cisco.com

Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Customers without service contracts should request free upgrades through the TAC.

Refer to Cisco Worldwide Contacts at http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, instructions, and e-mail addresses for support in various languages.

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 reported to Cisco TAC by customers observing the vulnerability during the normal operation of their devices.

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 Security Intelligence Operations at the following link

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-pai

Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses:

  • cust-security-announce@cisco.com
  • first-bulletins@lists.first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • full-disclosure@lists.grok.org.uk

Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates.


Revision History

Revision 1.0 2012-March-28 Initial public release

Cisco Security Procedures

Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco is available on Cisco.com at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html. This web page includes instructions for press inquiries regarding Cisco Security Advisories. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt.