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Cisco Security Advisory

Cisco IOS Software Network Address Translation Vulnerabilities

Advisory ID: cisco-sa-20110928-nat

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-nat

Revision 1.4

Last Updated  2012 September 21 19:21  UTC (GMT)

For Public Release 2011 September 28 16:00  UTC (GMT)

Related Resources:

View related IPS Signature

Summary

The Cisco IOS Software network address translation (NAT) feature contains multiple denial of service (DoS) vulnerabilities in the translation of the following protocols:

  • NetMeeting Directory (Lightweight Directory Access Protocol, LDAP)
  • Session Initiation Protocol. (Multiple vulnerabilities)
  • H.323 protocol

All the vulnerabilities described in this document are caused by packets in transit on the affected devices when those packets require application layer translation.

Cisco has released free software updates that address these vulnerabilities.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-nat.

Note: The September 28, 2011, Cisco IOS Software Security Advisory bundled publication includes ten Cisco Security Advisories. Nine of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses vulnerabilities in Cisco Unified Communications Manager. 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 September 2011 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_sep11.html


Affected Products

Vulnerable Products

Cisco devices that are running Cisco IOS Software are vulnerable when they are configured for NAT and contain support for one or more of the following features:

  • NetMeeting Directory NAT (LDAP on TCP port 389)
  • NAT for Session Initiation Protocol (SIP)
  • NAT for H.323

The preferred method to verify whether NAT is enabled on a Cisco IOS device is to log in to the device and issue the show ip nat statistics command. If NAT is active the sections Outside interfaces and Inside interfaces will each include at least one interface. The following example shows a device on which the NAT feature is active:

Router#show ip nat statistics

Total translations: 2 (0 static, 2 dynamic; 0 extended)
Outside interfaces: Serial0
Inside interfaces: Ethernet1
Hits: 135  Misses: 5
Expired translations: 2
Dynamic mappings:
-- Inside Source
access-list 1 pool mypool refcount 2
 pool mypool: netmask 255.255.255.0
        start 192.168.10.1 end 192.168.10.254
        type generic, total addresses 14, allocated 2 (14%), misses 0

Depending on the Cisco IOS Software release, the interface lists can be in the lines following the Outside interfaces and Inside interfaces lines. In releases that support the section filter on show commands, the administrator can determine whether NAT is active by using the show ip nat statistics | section interfaces command:

Router> show ip nat statistics | section interfaces
Outside interfaces:
  GigabitEthernet0/0
Inside interfaces: 
  GigabitEthernet0/1
Router>

Alternatively, to determine whether NAT has been enabled in the Cisco IOS Software configuration, either the ip nat inside and ip nat outside commands must be present in different interfaces or, in the case of the NAT Virtual Interface, the ip nat enable interface command will be present.

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.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by these vulnerabilities.

Details

NAT for NetMeeting Directory (LDAP) Vulnerability.

LDAP is a protocol for querying and modifying data of directory services implemented in IP networks. NAT for NetMeeting Directory, also known as the Internet Locator Service (ILS), translates LDAP packets on TCP port 389. The inspected port is not configurable.

This vulnerability is triggered by malformed transit LDAP traffic that needs to be processed by the NAT for NetMeeting Directory feature.

This vulnerability is documented in Cisco bug ID CSCtd10712 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-0946.

NAT for SIP DoS Vulnerabilities.

Four vulnerabilities in the NAT for SIP feature are described in this document:

NAT of SIP over TCP vulnerability: Crafted SIP packets on TCP port 5060 could cause unpredictable results, including the reload of the vulnerable device. Translation of SIP over TCP packets will be disabled by default with the fix for this vulnerability. This vulnerability is documented in Cisco bug ID CSCso02147 (registered customers only) and has been assigned Common Vulnerabilities and Exposures CVE-2011-3276.

Provider edge Multiprotocol Label Switching (MPLS) NAT of SIP over UDP packets DoS vulnerability: A malformed SIP packet on UDP 5060 that transits an MPLS enabled vulnerable device that needs an MPLS tag to be imposed on the malformed packet might reload the device. This vulnerability is documented in Cisco bug ID CSCti98219 (registered customers only) and has been assigned CVE ID CVE-2011-3279.

NAT of crafted SIP over UDP packets DoS vulnerabilities: There are two DoS vulnerabilities related to similar crafted packets on UDP port 5060 that require SIP translation: the first is a vulnerability that will cause the device to reload and the second will cause a memory leak that could lead to a DoS condition, including reload of the vulnerable device. The NAT of SIP vulnerabilities are documented in Cisco bug ID CSCti48483 (registered customers only) and Cisco bugs ID CSCtj04672 (registered customers only) . They have been assigned CVE IDs CVE-2011-3278 and CVE-2011-3280.

NAT of H.323 Packets DoS Vulnerability

Transit crafted H.323 packets on TCP port 1720 could cause a reload of the vulnerable device. This vulnerability is documented in Cisco bug ID CSCth11006 (registered customers only) ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-3277.

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 .

CSCtd10712 (registered customers only) NAT LDAP Vulnerability

Calculate the environmental score of CSCtd10712
CVSS Base Score - 7.8
Access Vector Access Complexity Authentication Confidentiality Impact Integrity Impact Availability Impact
Network Low None None None Complete
CVSS Temporal Score - 6.4
Exploitability Remediation Level Report Confidence
Functional Official-Fix Confirmed

CSCso02147 (registered customers only) NAT of SIP over TCP Vulnerability

Calculate the environmental score of CSCso02147
CVSS Base Score - 7.8
Access Vector Access Complexity Authentication Confidentiality Impact Integrity Impact Availability Impact
Network Low None None None Complete
CVSS Temporal Score -
Exploitability Remediation Level Report Confidence
Functional Official-Fix Not Defined

CSCti98219 (registered customers only) Provider-Edge MPLS NAT of SIP over UDP packets Vulnerability

Calculate the environmental score of CSCti98219
CVSS Base Score - 7.8
Access Vector Access Complexity Authentication Confidentiality Impact Integrity Impact Availability Impact
Network Low None None None Complete
CVSS Temporal Score - 6.4
Exploitability Remediation Level Report Confidence
Functional Official-Fix Confirmed

CSCti48483 (registered customers only) / CSCtj04672 (registered customers only) NAT of crafted SIP packets vulnerabilities

Calculate the environmental score of CSCti48483/CSCtj04672
CVSS Base Score - 7.8
Access Vector Access Complexity Authentication Confidentiality Impact Integrity Impact Availability Impact
Network Low None None None Complete
CVSS Temporal Score - 6.4
Exploitability Remediation Level Report Confidence
Functional Official-Fix Confirmed
CSCth11006 (registered customers only) NAT of H.323 Packets DoS Vulnerability

Calculate the environmental score of CSCth11006
CVSS Base Score - 7.8
Access Vector Access Complexity Authentication Confidentiality Impact Integrity Impact Availability Impact
Network Low None None None Complete
CVSS Temporal Score - 6.4
Exploitability Remediation Level Report Confidence
Functional Official-Fix Confirmed

Impact

Successful exploitation of these vulnerabilities can cause the device to reload or become unresponsive. For the NAT of UDP over SIP vulnerability that corresponds to Cisco bug CSCtj04672, It is also possible that exploitation can cause a memory leak. Repeated exploitation of the memory leak vulnerability can lead to a DoS condition in which the device reloads or becomes unresponsive. Reloading may occur automatically, or the device may require manual intervention to reload.

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.

Additionally, the Cisco IOS Software Checker is available on the Cisco Cisco Security (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x. It provides several features for checking which Security Advisories affect specified versions of Cisco IOS Software.

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 For This Advisory column. The First Fixed Release for All Advisories in the September 2011 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.

Major Release

     Availability of Repaired Releases

Affected 12.0-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

There are no affected 12.0-based releases

Affected 12.1-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

12.1E

Not Vulnerable

Vulnerable; first fixed in Release 12.2SXF

Affected 12.2-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

12.2

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2B

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2BC

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2BW

Not vulnerable

Not vulnerable

12.2BX

Vulnerable; first fixed in Release 12.2SB

Vulnerable; first fixed in Release 12.2SB

12.2BY

Not vulnerable

Not vulnerable

12.2BZ

Not vulnerable

Not vulnerable

12.2CX

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2CY

Not vulnerable

Not vulnerable

12.2CZ

Vulnerable; first fixed in Release 12.2SB

Vulnerable; first fixed in Release 12.2SB

12.2DA

Not vulnerable

Not vulnerable

12.2DD

Not vulnerable

Not vulnerable

12.2DX

Not vulnerable

Not vulnerable

12.2EU

Not vulnerable

Not vulnerable

12.2EW

Vulnerable; first fixed in Release 12.2SG

Releases up to and including 12.2(20)EW4 are not vulnerable.

Releases up to and including 12.2(20)EW4 are not vulnerable.

12.2EWA

Vulnerable; first fixed in Release 12.2SG

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2EX

12.2(55)EX

12.2(55)EX3

12.2EY

12.2(52)EY

12.2(52)EY1b

12.2(58)EY

12.2EZ

Vulnerable; migrate to any release in 15.0SE

Vulnerable; migrate to any release in 15.0SE

12.2FX

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2FY

Vulnerable; first fixed in Release 12.2EX

Vulnerable; first fixed in Release 12.2EX

12.2FZ

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2IRA

Vulnerable; migrate to any release in 12.2IRG

Vulnerable; migrate to any release in 12.2IRG

12.2IRB

Vulnerable; migrate to any release in 12.2IRG

Vulnerable; migrate to any release in 12.2IRG

12.2IRC

Vulnerable; migrate to any release in 12.2IRG

Vulnerable; migrate to any release in 12.2IRG

12.2IRD

12.2(33)IRD1

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IRE

12.2(33)IRE3

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IRF

Vulnerable; migrate to any release in 12.2IRG

Vulnerable; migrate to any release in 12.2IRG

12.2IRG

Not vulnerable

Not vulnerable

12.2IXA

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXB

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXC

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXD

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXE

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXF

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXG

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2IXH

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2JA

Not vulnerable

Not vulnerable

12.2JK

Not vulnerable

Not vulnerable

12.2MB

Not vulnerable

Not vulnerable

12.2MC

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2MRA

Vulnerable; first fixed in Release 12.2SRD

Vulnerable; first fixed in Release 12.2SRD

12.2MRB

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2S

Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.2SB

Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.2SB

12.2SB

12.2(31)SB20

12.2(33)SB10

12.2(31)SB20

12.2(33)SB10

12.2SBC

Vulnerable; first fixed in Release 12.2SB

Vulnerable; first fixed in Release 12.2SB

12.2SCA

Vulnerable; first fixed in Release 12.2SCC

Vulnerable; first fixed in Release 12.2SCC

12.2SCB

Vulnerable; first fixed in Release 12.2SCC

Vulnerable; first fixed in Release 12.2SCC

12.2SCC

12.2(33)SCC7

12.2(33)SCC7

12.2SCD

12.2(33)SCD6

12.2(33)SCD7

12.2(33)SCD6

12.2SCE

12.2(33)SCE1

12.2(33)SCE1

12.2SCF

Not vulnerable

Not vulnerable

12.2SE

12.2(55)SE2

12.2(58)SE

12.2(55)SE3

12.2(58)SE

12.2SEA

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SEB

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SEC

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SED

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SEE

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SEF

Vulnerable; first fixed in Release 12.2SE

Vulnerable; first fixed in Release 12.2SE

12.2SEG

Releases prior to 12.2(25)SEG4 are vulnerable; Releases 12.2(25)SEG4 and later are not vulnerable. First fixed in Release 12.2EX

Releases prior to 12.2(25)SEG4 are vulnerable; Releases 12.2(25)SEG4 and later are not vulnerable. First fixed in Release 12.2EX

12.2SG

12.2(53)SG4

Releases prior to 12.2(53)SG4 are vulnerable; Releases 12.2(53)SG4 and later are not vulnerable.

12.2SGA

Vulnerable; first fixed in Release 12.2SG

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2SL

Not vulnerable

Not vulnerable

12.2SM

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2SO

Not vulnerable

Not vulnerable

12.2SQ

12.2(50)SQ3

12.2(50)SQ3

12.2SRA

Vulnerable; first fixed in Release 12.2SRD

Vulnerable; first fixed in Release 12.2SRD

12.2SRB

Vulnerable; first fixed in Release 12.2SRD

Vulnerable; first fixed in Release 12.2SRD

12.2SRC

Vulnerable; first fixed in Release 12.2SRD

Vulnerable; first fixed in Release 12.2SRD

12.2SRD

12.2(33)SRD6

12.2(33)SRD6

12.2SRE

12.2(33)SRE3

12.2(33)SRE4

12.2STE

Not vulnerable

Not vulnerable

12.2SU

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2SV

Releases prior to 12.2(29b)SV1 are vulnerable; Releases 12.2(29b)SV1 and later are not vulnerable. Migrate to any release in 12.2SVD

Releases prior to 12.2(29a)SV are vulnerable; Releases 12.2(29a)SV and later are not vulnerable. Migrate to any release in 12.2SVD

12.2SVA

Not vulnerable

Not vulnerable

12.2SVC

Not vulnerable

Not vulnerable

12.2SVD

Not vulnerable

Not vulnerable

12.2SVE

Not vulnerable

Not vulnerable

12.2SW

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2SX

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2SXA

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2SXB

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2SXD

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2SXE

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2SXF

12.2(18)SXF17b

12.2(18)SXF17b

12.2SXH

Vulnerable; First fixed in Release 12.2SXI

Vulnerable; First fixed in Release 12.2SXI

12.2SXI

12.2(33)SXI6

12.2(33)SXI6

12.2SXJ

12.2(33)SXJ1

12.2(33)SXJ1

12.2SY

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2SZ

Vulnerable; first fixed in Release 12.2SB

Vulnerable; first fixed in Release 12.2SB

12.2T

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2TPC

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2XA

Not vulnerable

Not vulnerable

12.2XB

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2XC

Not vulnerable

Not vulnerable

12.2XD

Not vulnerable

Not vulnerable

12.2XE

Not vulnerable

Not vulnerable

12.2XF

Not vulnerable

Not vulnerable

12.2XG

Not vulnerable

Not vulnerable

12.2XH

Not vulnerable

Not vulnerable

12.2XI

Not vulnerable

Not vulnerable

12.2XJ

Not vulnerable

Not vulnerable

12.2XK

Not vulnerable

Not vulnerable

12.2XL

Not vulnerable

Not vulnerable

12.2XM

Not vulnerable

Not vulnerable

12.2XN

Not vulnerable

Not vulnerable

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

Releases prior to 12.2(54)XO are vulnerable; Releases 12.2(54)XO and later are not vulnerable. First fixed in Release 12.2SG

Releases prior to 12.2(54)XO are vulnerable; Releases 12.2(54)XO and later are not vulnerable.

12.2XQ

Not vulnerable

Not vulnerable

12.2XR

Not vulnerable

Not vulnerable

12.2XS

Not vulnerable

Not vulnerable

12.2XT

Not vulnerable

Not vulnerable

12.2XU

Not vulnerable

Not vulnerable

12.2XV

Not vulnerable

Not vulnerable

12.2XW

Not vulnerable

Not vulnerable

12.2YA

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2YB

Not vulnerable

Not vulnerable

12.2YC

Not vulnerable

Not vulnerable

12.2YD

Not vulnerable

Not vulnerable

12.2YE

Not vulnerable

Not vulnerable

12.2YF

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YG

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YH

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YJ

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YK

Not vulnerable

Not vulnerable

12.2YL

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YM

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2YN

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YO

Not vulnerable

Not vulnerable

12.2YP

Not vulnerable

Not vulnerable

12.2YQ

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YR

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YS

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YT

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YU

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YV

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YW

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YX

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YY

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2YZ

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2ZA

Vulnerable; first fixed in Release 12.2SXF

Vulnerable; first fixed in Release 12.2SXF

12.2ZB

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2ZC

Not vulnerable

Not vulnerable

12.2ZD

Not vulnerable

Not vulnerable

12.2ZE

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2ZF

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2ZG

Not vulnerable

Not vulnerable

12.2ZH

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.2ZJ

Not vulnerable

Not vulnerable

12.2ZL

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2ZP

Not vulnerable

Not vulnerable

12.2ZU

Vulnerable; first fixed in Release 12.2SXH

Vulnerable; first fixed in Release 12.2SXH

12.2ZX

Not vulnerable

Not vulnerable

12.2ZY

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.2ZYA

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Affected 12.3-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

12.3

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3B

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3BC

Vulnerable; first fixed in Release 12.2SCC

Vulnerable; first fixed in Release 12.2SCC

12.3BW

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

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

12.3JK

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 12.4

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 12.4

12.3JL

Not vulnerable

Not vulnerable

12.3JX

Not vulnerable

Not vulnerable

12.3T

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3TPC

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the 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 12.4

12.3XB

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.3XC

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XD

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XE

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XF

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.3XG

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XI

Vulnerable; first fixed in Release 12.2SB

Vulnerable; first fixed in Release 12.2SB

12.3XJ

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.3XK

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XL

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3XQ

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XR

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XS

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XU

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3XW

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.3XX

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3XY

Not vulnerable

Not vulnerable

12.3XZ

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3YA

Vulnerable; first fixed in Release 12.4

Vulnerable; first fixed in Release 12.4

12.3YD

Not vulnerable

Not vulnerable

12.3YF

Not vulnerable

Not vulnerable

12.3YG

Not vulnerable

Not vulnerable

12.3YH

Not vulnerable

Not vulnerable

12.3YI

Not vulnerable

Not vulnerable

12.3YJ

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3YK

Not vulnerable

Not vulnerable

12.3YM

Not vulnerable

Not vulnerable

12.3YQ

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3YS

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3YT

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3YU

Vulnerable; first fixed in Release 12.4XB

Vulnerable; first fixed in Release 12.4XB

12.3YX

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.3YZ

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.3ZA

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

Affected 12.4-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

12.4

12.4(25f)

12.4(25f)

12.4GC

12.4(24)GC4

12.4(24)GC4

12.4JA

Not vulnerable

Not vulnerable

12.4JAX

Not vulnerable

Not vulnerable

12.4JDA

Not vulnerable

Not vulnerable

12.4JDC

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

12.4JMA

Not vulnerable

Not vulnerable

12.4JMB

Not vulnerable

Not vulnerable

12.4JX

Vulnerable; migrate to any release in 12.4JA

Releases up to and including 12.4(21a)JX are not vulnerable.

Vulnerable; migrate to any release in 12.4JA

Releases up to and including 12.4(21a)JX are not vulnerable.

12.4JY

Not vulnerable

Not vulnerable

12.4MD

12.4(24)MD6 on 28-Oct-11

12.4(24)MD6 on 28-Oct-11

12.4MDA

12.4(24)MDA7

12.4(24)MDA7

12.4MDB

12.4(24)MDB3

12.4(24)MDB3

12.4MR

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4MRA

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4MRB

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4SW

Not vulnerable

Not vulnerable

12.4T

12.4(15)T16

12.4(24)T6

12.4(15)T16

12.4(24)T6

12.4XA

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XB

12.4(2)XB12

12.4(2)XB12

12.4XC

Not vulnerable

Not vulnerable

12.4XD

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XE

Not vulnerable

Not vulnerable

12.4XF

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XG

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XJ

Not vulnerable

Not vulnerable

12.4XK

Not vulnerable

Not vulnerable

12.4XL

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4XM

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XN

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4XP

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4XQ

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

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 12.4T

12.4XV

Not vulnerable

Not vulnerable

12.4XW

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XY

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4XZ

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4YA

Vulnerable; first fixed in Release 12.4T

Vulnerable; first fixed in Release 12.4T

12.4YB

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4YD

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

12.4YE

12.4(22)YE6; Available on 30-SEP-11

12.4(24)YE7; Available on 17-OCT-11

12.4(22)YE6; Available on 30-SEP-11

12.4(24)YE7; Available on 17-OCT-11

12.4YG

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Affected 15.0-Based Releases

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

15.0M

15.0(1)M7

15.0(1)M7

15.0MR

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

15.0MRA

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

15.0S

15.0(1)S4

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

15.0(1)S4

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

15.0SA

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

15.0SE

Not vulnerable

Not vulnerable

15.0SG

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

15.0XA

Vulnerable; first fixed in Release 15.1T

Vulnerable; first fixed in Release 15.1T

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 September 2011 Bundled Publication

15.1EY

15.1(2)EY

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

15.1GC

Vulnerable; first fixed in Release 15.1T

Vulnerable; first fixed in Release 15.1T

15.1M

15.1(4)M2; Available on 30-SEP-11

15.1(4)M2; Available on 30-SEP-11

15.1MR

Not vulnerable

Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.

15.1S

15.1(2)S2

15.1(3)S

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

15.1(2)S2

15.1(3)S

Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability

15.1T

15.1(1)T4; Available on 09-DEC-11

15.1(2)T4

15.1(3)T2

15.1(1)T4; Available on 09-DEC-11

15.1(2)T4

15.1(3)T2

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 September 2011 Bundled Publication

There are no affected 15.2-based releases

Cisco IOS XE Software

Cisco IOS XE Release

First Fixed Release

First Fixed Release for All Advisories in the September 2011 Bundled Publication

2.1.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

2.2.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

2.3.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

2.4.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

2.5.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

2.6.x

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

3.1.xS

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

3.1.xSG

Vulnerable; migrate to 3.2.0SG or later

Vulnerable; migrate to 3.2.0SG or later

3.2.xS

Not vulnerable

Vulnerable; migrate to 3.3.2S or later

3.2.xSG

Not vulnerable

Not vulnerable

3.3.xS

Not vulnerable

3.3.2S

3.4.xS

Not vulnerable

Not vulnerable

For mapping of Cisco IOS XE to Cisco IOS releases, please refer to the 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 in the September 2011 bundled publication.


Workarounds

It is possible to mitigate the vulnerabilities in this advisory by disabling the translation of embedded IP addresses in the payload of IP packets. Disabling NAT for the different protocols requires different configurations. For some protocols, a single command can be used. Other protocols require individual NAT translation rules be added to the configuration.

NAT LDAP Vulnerability Mitigation

To disable NAT of LDAP, port-based address translation needs to be configured to disable LDAP inspection using the no-payload keyword. This will still allow the NAT of LDAP packets at Layer 3 (non-port specific). Translation of other non-LDAP protocols translation will not be affected. Applications that use embedded IP addresses in LDAP, such as NetMeeting Directory, will be negatively impacted if the embedded IP addresses need to be translated.

The following is an example configuration that includes the mitigation for two NAT rules.


!-- NAT rule for port TCP/389 to disable IP NAT for LDAP translation
!-- Takes precedence over the non-port translation rule.

ip nat outside source static tcp 192.168.0.1 389 192.168.1.1 389 no-payload
ip nat outside source static tcp 192.168.0.3 389 192.168.1.3 389 no-payload

!-- Translation rule for all other protocols

ip nat outside source static 192.168.0.1 192.168.1.1
ip nat outside source static 192.168.0.3 192.168.1.3

interface GigabitEthernet0/0
  ip nat inside

interface GigabitEthernet0/1
  ip nat outside

Each NAT translation rule in the configuration will need to be updated to include a per-port rule that disables translation of TCP packets on port 389.

NAT for SIP over TCP DoS Vulnerability Mitigation

Mitigation for this vulnerability consists of disabling NAT for SIP over the TCP transport by using the no ip nat service sip tcp port 5060 global configuration command.

NAT of Crafted SIP over UDP Packets DoS Vulnerability Mitigation

Mitigation of these vulnerabilities consists of disabling NAT for SIP over the UDP transport by using the no ip nat service sip udp port 5060 global configuration command.

NAT for Crafted H.323 Packets DoS Vulnerability Mitigation

Mitigation for this vulnerability consists of disabling NAT for H.323 and H.225.0 using the no ip nat service h225 global configuration command.

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.

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

Do not contact psirt@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, 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@cisco.com

Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.

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

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.

The NAT LDAP vulnerability and the NAT of crafted SIP packets vulnerabilities were found during internal Cisco testing. The NAT SIP/TCP vulnerability, provider edge MPLS NAT of SIP over UDP packets vulnerability, and, NAT of H.323 packets DoS vulnerabilities were found during troubleshooting of TAC service requests.

Status of This Notice: Final

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.


Distribution

This advisory is posted on Cisco's worldwide website at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-nat

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@cisco.com
  • first-teams@first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • full-disclosure@lists.grok.org.uk
  • comp.dcom.sys.cisco@newsgate.cisco.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 1.4 2012-May-14 Update vulnerability status for 12.1E.
Revision 1.3 2012-Feb-17  Updated information in Ciso IOS Software table for Cisco IOS 12.2SXH.
Revision 1.2 2011-Oct-21  Corrected back-end information regarding CSCtd10712. No change made in the Security Advisory itself.
Revision 1.1 2011-Sep-30 Updated information in fixed Cisco IOS Software table for releases 12.2MRB, 12.2SXH, 12.2SXI, 12.2SXJ, and 12.2SY.
Revision 1.0 2011-Sep-28 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/web/about/security/psirt/security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.


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