full-disclosure - Cisco Security Advisory: Cisco IOS Software Tunneled Traffic Queue Wedge Vulnerability

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Message-id: <20120926121809.cisco-sa-20120926-c10k-tunnels@psirt.cisco.com>
Date: Wed, 26 Sep 2012 12:18:34 -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
	Tunneled Traffic Queue Wedge Vulnerability

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Cisco IOS Software Tunneled Traffic Queue Wedge Vulnerability

Advisory ID: cisco-sa-20120926-c10k-tunnels

Revision 1.0

For Public Release 2012 September 26 16:00  UTC (GMT)
+---------------------------------------------------------------------

Summary
=======

Cisco IOS Software contains a queue wedge vulnerability that can be
triggered when processing IP tunneled packets.  Only Cisco IOS
Software running on the Cisco 10000 Series router has been
demonstrated to be affected.

Successful exploitation of this vulnerability may prevent traffic from
transiting the affected interfaces.

Cisco has released free software updates that addresses this
vulnerability.  There are no workarounds for this vulnerability.  This
advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-c10k-tunnels

Note: The September 26, 2012, Cisco IOS Software Security Advisory
bundled publication includes 9 Cisco Security Advisories. Eight of the
advisories address vulnerabilities in Cisco IOS Software, and one
advisory addresses a vulnerability in Cisco Unified Communications
Manager. 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 September
2012 bundled publication.

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

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep12.html

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