full-disclosure - Cisco Security Advisory: Cisco IOS Software Zone-Based Policy Firewall Session Initiation Protocol Inspection Denial of Service Vulnerability

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Message-id: <20130327121309.cisco-sa-20130327-cce@psirt.cisco.com>
Date: Wed, 27 Mar 2013 12:13:56 -0400
From: Cisco Systems Product Security Incident Response Team <psirt@...co.com>
To: full-disclosure@...ts.grok.org.uk
Cc: psirt@...co.com
Subject: Cisco Security Advisory: Cisco IOS Software
	Zone-Based Policy Firewall Session Initiation Protocol
	Inspection Denial of Service Vulnerability

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Cisco IOS Software Zone-Based Policy Firewall Session Initiation
Protocol Inspection Denial of Service Vulnerability

Advisory ID: cisco-sa-20130327-cce

Revision 1.0

For Public Release 2013 March 27 16:00  UTC (GMT)
+---------------------------------------------------------------------

Summary
=======

Cisco IOS Software contains a memory leak vulnerability that could be
triggered through the processing of malformed Session Initiation
Protocol (SIP) messages. Exploitation of this vulnerability could
cause an interruption of services. Only devices that are configured
for SIP inspection are affected by this vulnerability.

Cisco has released free software updates that address this
vulnerability. There are no workarounds for devices that must run SIP
inspection.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-cce

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

Individual publication links are in "Cisco Event Response: Semiannual
Cisco IOS Software Security Advisory Bundled Publication" at the
following link:
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar13.html
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