Cisco Security Advisory: Cisco IOS Software Network Address Translation Vulnerabilities

The Cisco IOS Software network address translation (NAT) feature contains multiple denial of service (DoS) vulnerabilities.

Cisco Security Advisory: Cisco IOS Software Network Address Translation Vulnerabilities

Document ID: 112253

Advisory ID: cisco-sa-20110928-nat

http://www.cisco.com/warp/public/707/cisco-sa-20110928-nat.shtml

Revision 1.1

Last Updated 2011 Sep 30 1830 UTC (GMT)

For Public Release 2011 Sep 28 1600 UTC (GMT)

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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://www.cisco.com/warp/public/707/cisco-sa-20110928-nat.shtml .

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 a vulnerability 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
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