Cisco Security Advisory: Cisco IOS Software Network Address Translation Vulnerabilities

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Advisory ID: cisco-sa-20100922-nat

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-nat

Revision 1.1

Last Updated 2012 September 21 19:14 UTC (GMT)

For Public Release 2010 September 22 16:00 UTC (GMT)

Summary
Affected Products
Details
Vulnerability Scoring Details
Impact
Software Versions and Fixes
Workarounds
Obtaining Fixed Software
Exploitation and Public Announcements
Status of This Notice: Final
Distribution
Revision History
Cisco Security Procedures

Summary

The Cisco IOS® Software Network Address Translation functionality contains three denial of service (DoS) vulnerabilities. The first vulnerability is in the translation of Session Initiation Protocol (SIP) packets, the second vulnerability in the translation of H.323 packets and the third vulnerability is in the translation of H.225.0 call signaling for H.323 packets.

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-20100922-nat.

Note: The September 22, 2010, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. Five of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses vulnerabilities in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The table at the following URL lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 22, 2010, or earlier:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-bundle

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_sep10.html

Affected Products

Vulnerable Products

Cisco devices running Cisco IOS Software that are configured for NAT and that support NAT for SIP, H.323, or H.225.0 call signaling for H.323 packets are affected.

To verify whether NAT is enabled on a Cisco IOS device log in to the device and issue the show ip nat statistics command. The following example shows a device that is configured with NAT:

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

Alternatively, administrators can use the show running-config | include ip nat command to verify if NAT has been enabled on the router interfaces.

For NAT to be enabled in a router either the ip nat inside and ip nat outside commands must be present in different interfaces or, in the case of NAT Virtual Interface, if the ip nat enable interface command is present.

In order to determine the software that runs on a Cisco IOS product, log in to the device and issue the show version command to display the system banner. Cisco IOS software identifies itself as "Internetwork Operating System Software" or simply "IOS." On the next line of output, the image name displays between parentheses, followed by "Version" and the Cisco IOS release name. Other Cisco devices do not have the show version command or give different output.

The following example shows output from a device that runs an IOS image:

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

<More output removed for brevity>

Products Confirmed Not Vulnerable

Cisco IOS devices not explicitly configured for NAT are not vulnerable.

Cisco IOS XE Software is not affected by these vulnerabilities.

Cisco IOS XR Software is not affected by these vulnerabilities.

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

Details

The three vulnerabilities are triggered by transit traffic that needs to be processed by the NAT feature. Each vulnerability is independent of each other.

NAT for SIP DoS Vulnerability

SIP is a popular signaling protocol that is used to manage voice and video calls across IP networks such as the Internet. SIP is responsible for handling all aspects of call setup and termination. Voice and video are the most popular types of sessions that SIP handles, but the protocol has the flexibility to accommodate other applications that require call setup and termination.

NAT for SIP translates packets using UDP (port 5060) or TCP (port 5060) as the underlying transport protocol. The NAT for SIP DoS vulnerability can be exploited only with the use of UDP port 5060 packets.

This vulnerability is documented in Cisco bug ID CSCtf17624 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2010-2831.

NAT for H.323 DoS Vulnerability

H.323 is the International Telecommunication Union (ITU) standard for real-time multimedia communications and conferencing over packet-based (IP) networks.

NAT for H.323 translates packets on TCP port 1720. There is a DoS vulnerability in the NAT procession of H.323 packets. The vulnerability does not require the completion of a TCP three-way handshake.

This vulnerability is documented in Cisco bug ID CSCtf91428 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) IDs CVE-2010-2832.

NAT for H.225.0 DoS vulnerability

H.323 is the ITU standard for real-time multimedia communications and conferencing over packet-based (IP) networks. A subset of the H.323 standard is H.225.0, a standard used for call signaling protocols and media stream packetization over IP networks.

NAT for H.225.0 translates packets on TCP port 1720. There is a DoS vulnerability in the NAT translation of H.225.0 call signaling for H.323 packets.

This vulnerability is documented in Cisco bug ID CSCtd86472 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) IDs CVE-2010-2833.

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 .

CSCtf17624 ( registered customers only) NAT SIP DoS Vulnerability Calculate the environmental score of CSCtf17624
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

CSCtf91428 ( registered customers only) NAT for H.323 DoS Vulnerability Calculate the environmental score of CSCtf91428
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

CSCtd86472 ( registered customers only) NAT for H.225.0 DoS Vulnerability Calculate the environmental score of CSCtd86472
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 any of the vulnerabilities described in this document may cause the affected device to reload. Repeated exploitation will result in an extended denial of service (DoS) condition.

Software Versions and Fixes

When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.

In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.

Each row of the 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 2010 Bundle 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 for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
There are no affected 12.0 based releases
Affected 12.1-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
12.1	Vulnerable; first fixed in 12.4 Releases up to and including 12.1(4b) are not vulnerable.	Vulnerable; first fixed in 12.4T Releases up to and including 12.1(4b) are not vulnerable.
12.1AA	Not Vulnerable	Not Vulnerable
12.1AX	Not Vulnerable	Not Vulnerable
12.1AY	Not Vulnerable	Not Vulnerable
12.1AZ	Not Vulnerable	Not Vulnerable
12.1CX	Not Vulnerable	Not Vulnerable
12.1DA	Not Vulnerable	Not Vulnerable
12.1DB	Not Vulnerable	Not Vulnerable
12.1DC	Not Vulnerable	Not Vulnerable
12.1E	Not Vulnerable	Not Vulnerable
12.1EA	Not Vulnerable	Not Vulnerable
12.1EB	Not Vulnerable	Not Vulnerable
12.1EC	Not Vulnerable	Not Vulnerable
12.1EO	Not Vulnerable	Not Vulnerable
12.1EU	Not Vulnerable	Not Vulnerable
12.1EV	Not Vulnerable	Not Vulnerable
12.1EW	Not Vulnerable	Not Vulnerable
12.1EX	Not Vulnerable	Not Vulnerable
12.1EY	Not Vulnerable	Not Vulnerable
12.1EZ	Not Vulnerable	Not Vulnerable
12.1GA	Not Vulnerable	Not Vulnerable
12.1GB	Not Vulnerable	Not Vulnerable
12.1T	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.1(3a)T8 are not vulnerable.
12.1XA	Not Vulnerable	Not Vulnerable
12.1XB	Not Vulnerable	Not Vulnerable
12.1XC	Not Vulnerable	Not Vulnerable
12.1XD	Not Vulnerable	Not Vulnerable
12.1XE	Not Vulnerable	Not Vulnerable
12.1XF	Not Vulnerable	Not Vulnerable
12.1XG	Not Vulnerable	Not Vulnerable
12.1XH	Not Vulnerable	Not Vulnerable
12.1XI	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XJ	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XL	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XM	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XP	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XQ	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XR	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XS	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.1(3)XS are not vulnerable.
12.1XT	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.1(2)XT2 are not vulnerable.
12.1XU	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XV	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1XW	Not Vulnerable	Not Vulnerable
12.1XX	Not Vulnerable	Not Vulnerable
12.1XY	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.1(4)XY are not vulnerable.
12.1XZ	Not Vulnerable	Not Vulnerable
12.1YA	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YB	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YC	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YD	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YE	Not Vulnerable	Releases prior to 12.1(5)YE6 are vulnerable, release 12.1(5)YE6 and later are not vulnerable; first fixed in 12.4T
12.1YF	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YH	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.1YI	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.1YJ	Not Vulnerable	Not Vulnerable
Affected 12.2-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
12.2	Vulnerable; first fixed in 12.4 Releases up to and including 12.2(16f) are not vulnerable.	Vulnerable; first fixed in 12.4T
12.2B	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.2(2)B7 are not vulnerable.
12.2BC	Not Vulnerable	Not Vulnerable
12.2BW	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2BX	Not Vulnerable	Vulnerable; first fixed in 12.2SB Releases up to and including 12.2(15)BX are not vulnerable.
12.2BY	Not Vulnerable	Vulnerable; first fixed in 12.4T Releases up to and including 12.2(2)BY3 are not vulnerable.
12.2BZ	Not Vulnerable	Not Vulnerable
12.2CX	Not Vulnerable	Not Vulnerable
12.2CY	Not Vulnerable	Not Vulnerable
12.2CZ	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2DA	Not Vulnerable	Not Vulnerable
12.2DD	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2DX	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2EW	Not Vulnerable	Not Vulnerable
12.2EWA	Not Vulnerable	Not Vulnerable
12.2EX	Vulnerable; migrate to any release in 12.2SE	Not Vulnerable
12.2EY	Not Vulnerable	Not Vulnerable
12.2EZ	Not Vulnerable	Not Vulnerable
12.2FX	Not Vulnerable	Not Vulnerable
12.2FY	Not Vulnerable	Not Vulnerable
12.2FZ	Not Vulnerable	Not Vulnerable
12.2IRA	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
12.2IRB	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
12.2IRC	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
12.2IRD	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
12.2IRE	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
12.2IXA	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
12.2IXB	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
12.2IXC	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
12.2IXD	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
12.2IXE	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
12.2IXF	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
12.2IXG	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
12.2IXH	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
12.2JA	Not Vulnerable	Not Vulnerable
12.2JK	Not Vulnerable	Not Vulnerable
12.2MB	Not Vulnerable	Not Vulnerable
12.2MC	Not Vulnerable	Releases up to and including 12.2(15)MC1 are not vulnerable. Releases 12.2(15)MC2b and later are not vulnerable; first fixed in 12.4T
12.2MRA	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
12.2MRB	12.2(33)MRB2	12.2(33)MRB2
12.2S	Releases prior to 12.2(30)S are vulnerable, release 12.2(30)S and later are not vulnerable	Releases prior to 12.2(30)S are vulnerable, release 12.2(30)S and later are not vulnerable
12.2SB	Not Vulnerable	12.2(31)SB19; Releases prior to 12.2(33)SB5 are vulnerable, release 12.2(33)SB5 and later are not vulnerable
12.2SBC	Vulnerable; first fixed in 12.2SB	Vulnerable; first fixed in 12.2SB
12.2SCA	Not Vulnerable	Vulnerable; first fixed in 12.2SCB
12.2SCB	12.2(33)SCB10 12.2(33)SCB9	12.2(33)SCB9
12.2SCC	12.2(33)SCC5	12.2(33)SCC5
12.2SCD	12.2(33)SCD3 12.2(33)SCD4	12.2(33)SCD3
12.2SE	Not Vulnerable	Not Vulnerable
12.2SEA	Not Vulnerable	Not Vulnerable
12.2SEB	Not Vulnerable	Not Vulnerable
12.2SEC	Not Vulnerable	Not Vulnerable
12.2SED	Not Vulnerable	Not Vulnerable
12.2SEE	Not Vulnerable	Not Vulnerable
12.2SEF	Not Vulnerable	Not Vulnerable
12.2SEG	Not Vulnerable	Not Vulnerable
12.2SG	Releases prior to 12.2(40)SG are vulnerable, release 12.2(40)SG and later are not vulnerable; migrate to any release in 12.2SGA	Releases prior to 12.2(40)SG are vulnerable, release 12.2(40)SG and later are not vulnerable; migrate to any release in 12.2SGA
12.2SGA	Not Vulnerable	Not Vulnerable
12.2SL	Not Vulnerable	Not Vulnerable
12.2SM	Not Vulnerable	Not Vulnerable
12.2SO	Not Vulnerable	Not Vulnerable
12.2SQ	Not Vulnerable	Not Vulnerable
12.2SRA	Not Vulnerable	Releases prior to 12.2(33)SRA6 are vulnerable, release 12.2(33)SRA6 and later are not vulnerable
12.2SRB	Not Vulnerable	Releases prior to 12.2(33)SRB1 are vulnerable, release 12.2(33)SRB1 and later are not vulnerable
12.2SRC	Not Vulnerable	Not vulnerable
12.2SRD	Not Vulnerable	Not vulnerable
12.2SRE	12.2(33)SRE1	12.2(33)SRE1
12.2STE	Not Vulnerable	Not Vulnerable
12.2SU	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2SV	Releases prior to 12.2(29b)SV1 are vulnerable, release 12.2(29b)SV1 and later are not vulnerable; migrate to any release in 12.2SVD	Releases prior to 12.2(29b)SV1 are vulnerable, release 12.2(29b)SV1 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	Releases up to and including 12.2(25)SW3 are not vulnerable. Releases 12.2(25)SW12 and later are not vulnerable; first fixed in 12.4T	Releases up to and including 12.2(21)SW1 are not vulnerable. Releases 12.2(25)SW12 and later are not vulnerable; first fixed in 12.4T
12.2SX	Releases up to and including 12.2(14)SX2 are not vulnerable.	Releases up to and including 12.2(14)SX2 are not vulnerable.
12.2SXA	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
12.2SXB	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
12.2SXD	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
12.2SXE	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
12.2SXF	Releases prior to 12.2(18)SXF11 are vulnerable, releases 12.2(18)SXF11 and later are not vulnerable	Releases prior to 12.2(18)SXF11 are vulnerable, releases 12.2(18)SXF11 and later are not vulnerable
12.2SXH	Not Vulnerable	Not Vulnerable
12.2SXI	Not Vulnerable	Not Vulnerable
12.2SY	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory	Not Vulnerable
12.2SZ	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2T	Not Vulnerable	Vulnerable; first fixed in 12.4T
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 12.4T
12.2XB	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XC	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XD	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XE	Not Vulnerable	Not Vulnerable
12.2XF	Not Vulnerable	Not Vulnerable
12.2XG	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XH	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XI	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XJ	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XK	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XL	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XM	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XN	Vulnerable; first fixed in 12.2SB	Vulnerable; first fixed in 12.2SB
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	Not Vulnerable	Not Vulnerable
12.2XQ	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XR	Not Vulnerable	Not Vulnerable
12.2XS	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XT	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XU	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XV	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2XW	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2YA	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2YB	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
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
12.2YF	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YG	Not Vulnerable	Not Vulnerable
12.2YH	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YJ	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
12.2YL	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YM	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2YN	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YO	Not Vulnerable	Not Vulnerable
12.2YP	Not Vulnerable	Not Vulnerable
12.2YQ	Not Vulnerable	Not Vulnerable
12.2YR	Not Vulnerable	Not Vulnerable
12.2YS	Not Vulnerable	Not Vulnerable
12.2YT	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YU	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2YV	Not Vulnerable	Releases prior to 12.2(11)YV1 are vulnerable, release 12.2(11)YV1 and later are not vulnerable
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	Not Vulnerable
12.2ZB	Not Vulnerable	Releases up to and including 12.2(8)ZB are not vulnerable.
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 12.4T
12.2ZF	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2ZG	Not Vulnerable	Not Vulnerable
12.2ZH	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.2ZJ	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2ZL	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
12.2ZP	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.2ZU	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
12.2ZX	Not Vulnerable	Not Vulnerable
12.2ZY	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
12.2ZYA	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
Affected 12.3-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
12.3	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.3B	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.3BC	Not Vulnerable	Not Vulnerable
12.3BW	Not Vulnerable	Not Vulnerable
12.3EU	Not Vulnerable	Not Vulnerable
12.3JA	Not Vulnerable	Not Vulnerable
12.3JEA	Not Vulnerable	Not Vulnerable
12.3JEB	Not Vulnerable	Not Vulnerable
12.3JEC	Not Vulnerable	Not Vulnerable
12.3JED	Not Vulnerable	Not Vulnerable
12.3JK	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 12.4T	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 12.4T
12.3JL	Not Vulnerable	Not Vulnerable
12.3JX	Not Vulnerable	Not Vulnerable
12.3T	Vulnerable; first fixed in 12.4	Vulnerable; first fixed in 12.4T
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	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XA	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XB	Not Vulnerable	Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory
12.3XC	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XD	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XE	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
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 12.4T	Vulnerable; first fixed in 12.4T
12.3XI	Releases prior to 12.3(7)XI11 are vulnerable, release 12.3(7)XI11 and later are not vulnerable; first fixed in 12.2SB	Releases prior to 12.3(7)XI11 are vulnerable, releases 12.3(7)XI11 and later are not vulnerable; first fixed in 12.2SB
12.3XJ	Vulnerable; first fixed in 12.3YX	Vulnerable; first fixed in 12.4XR
12.3XK	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XL	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XQ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XR	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XS	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XU	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XW	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XX	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3XY	Not Vulnerable	Vulnerable; first fixed in 12.4T
12.3XZ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YA	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YD	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YF	Vulnerable; first fixed in 12.3YX	Vulnerable; first fixed in 12.4XR
12.3YG	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YH	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YI	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YJ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YK	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YM	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YQ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YS	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YT	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YU	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.3YX	12.3(14)YX17	Vulnerable; first fixed in 12.4XR
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 12.4T	Vulnerable; first fixed in 12.4T
Affected 12.4-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
12.4	12.4(25d)	12.4(25d)
12.4GC	12.4(24)GC2	12.4(24)GC2
12.4JA	Not Vulnerable	Not Vulnerable
12.4JDA	Not Vulnerable	Not Vulnerable
12.4JDC	Not Vulnerable	Not Vulnerable
12.4JDD	Not Vulnerable	Not Vulnerable
12.4JHA	Not Vulnerable	Not Vulnerable
12.4JHB	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	Not Vulnerable	Not Vulnerable
12.4JY	Not Vulnerable	Not Vulnerable
12.4MD	12.4(22)MD2	12.4(24)MD2
12.4MDA	12.4(22)MDA4	12.4(22)MDA4
12.4MR	Vulnerable; first fixed in 12.4MRA	Vulnerable; first fixed in 12.4MRA
12.4MRA	12.4(20)MRA1	12.4(20)MRA1
12.4SW	Releases prior to 12.4(15)SW6 are vulnerable, release 12.4(15)SW6 and later are not vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4T	12.4(15)T14 12.4(20)T6 12.4(24)T4	12.4(15)T14 12.4(20)T6 12.4(24)T4
12.4XA	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XB	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XC	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XD	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XE	Releases prior to 12.4(6)XE5 are vulnerable, release 12.4(6)XE5 and later are not vulnerable; first fixed in 12.4T	Releases prior to 12.4(6)XE5 are vulnerable, release 12.4(6)XE5 and later are not vulnerable; first fixed in 12.4T
12.4XF	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XG	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XJ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XK	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
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 12.4T	Vulnerable; first fixed in 12.4T
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	12.4(15)XQ6; Available on 22-SEP-10	12.4(15)XQ6; Available on 22-SEP-10
12.4XR	12.4(15)XR9 12.4(22)XR7	12.4(15)XR9 12.4(22)XR7
12.4XT	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
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 12.4T	Vulnerable; first fixed in 12.4T
12.4XY	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4XZ	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
12.4YA	Vulnerable; first fixed in 12.4T	Vulnerable; first fixed in 12.4T
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	Vulnerable; first fixed in 12.4T	12.4(24)YE1
12.4YG	12.4(24)YG3	12.4(24)YG3
Affected 15.0-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
15.0M	15.0(1)M3	15.0(1)M3
15.0S	Cisco 7600 and 10000 Series routers: 15.0(1)S1 Cisco ASR 1000 Series routers: Please see Cisco IOS-XE Software Availability	Cisco 7600 and 10000 Series routers: 15.0(1)S1 Cisco ASR 1000 Series routers: Please see Cisco IOS-XE Software Availability
15.0XA	Vulnerable; first fixed in 15.1T	Vulnerable; first fixed in 15.1T
15.0XO	Not Vulnerable	Not Vulnerable
Affected 15.1-Based Releases	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
15.1T	15.1(1)T1	15.1(2)T1
15.1XB	15.1(1)XB2	Vulnerable; first fixed in 15.1T

Cisco IOS XE Software

Cisco IOS XE Release	First Fixed Release for This Advisory	First Fixed Release for All Advisories in the September 2010 Bundle Publication
2.1.x	Not Vulnerable	Not Vulnerable
2.2.x	Not Vulnerable	Not Vulnerable
2.3.x	Not Vulnerable	Not Vulnerable
2.4.x	Not Vulnerable	Not Vulnerable
2.5.x	Not Vulnerable	Vulnerable; migrate to 2.6.2 or later
2.6.x	Not Vulnerable	2.6.2
3.1.xS	Not Vulnerable	Not Vulnerable

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

Cisco IOS XR Software Table

Cisco IOS XR Software is not affected by the vulnerabilities disclosed in the September 22, 2010, Cisco IOS Software Security Advisory bundle publication.

Workarounds

The mitigations for the NAT vulnerabilities disable the respective Application Layer Gateway NAT processing. That is, packets will continue to be translated at the network and transport layers, but the embedded IP addresses will not be translated.

NAT for Session Initiation Protocol DoS Vulnerability

Mitigation for this vulnerability 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 H.323 DoS Vulnerability

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.

NAT for H.225.0 DoS vulnerability

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 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 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 for SIP DoS vulnerability was found during internal testing.

The NAT for H.323 DoS and the NAT for H.225.0 DoS vulnerabilities were found during the resolution of customer 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-20100922-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-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
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 1.0

2010-Sep-22

Initial public release.

Cisco Security Procedures

Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.

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Cisco Security Advisory

Cisco IOS Software Network Address Translation Vulnerabilities

Advisory ID: cisco-sa-20100922-nat

Revision 1.1

Last Updated 2012 September 21 19:14 UTC (GMT)

For Public Release 2010 September 22 16:00 UTC (GMT)

Contents

writePM('affected')Affected Products

writePM('vps') Vulnerable Products

writePM('nonvulnerable')Products Confirmed Not Vulnerable

writePM('details')Details

NAT for SIP DoS Vulnerability

NAT for H.323 DoS Vulnerability

NAT for H.225.0 DoS vulnerability

writePM('vulnerability')Vulnerability Scoring Details

writePM('impact')Impact

writePM('software')Software Versions and Fixes

Cisco IOS XR Software Table

writePM('workarounds')Workarounds

NAT for Session Initiation Protocol DoS Vulnerability

NAT for H.323 DoS Vulnerability

NAT for H.225.0 DoS vulnerability

writePM('fixes')Obtaining Fixed Software

writePM('CustomerswithServiceContracts')Customers with Service Contracts

writePM('CustomerSupportOrganizationsConcepts')Customers Using Third-Party Support Organizations

writePM('CustomerswithoutServiceContracts')Customers Without Service Contracts

writePM('exploitation')Exploitation and Public Announcements

writePM('status')Status of This Notice: Final

writePM('distribution')Distribution

writePM('revision')Revision History

writePM('secpro')Cisco Security Procedures

Related Links

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Affected Products

Vulnerable Products

Products Confirmed Not Vulnerable

Details

Vulnerability Scoring Details

Impact

Software Versions and Fixes

Workarounds

Obtaining Fixed Software

Customers with Service Contracts

Customers Using Third-Party Support Organizations

Customers Without Service Contracts

Exploitation and Public Announcements

Status of This Notice: Final

Distribution

Revision History

Cisco Security Procedures