[Full-disclosure] Cisco Security Advisory: Cisco IOS Software Resource Reservation Protocol Interface Queue Wedge Vulnerability

[Cisco Systems Product Security Incident Response Team <psirt@xxxxxxxxx>]

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Cisco IOS Software Resource Reservation Protocol Interface Queue Wedge 
Vulnerability

Advisory ID: cisco-sa-20130925-rsvp

Revision 1.0

For Public Release 2013 September 25 16:00  UTC (GMT)
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Summary
=======

A vulnerability in the Resource Reservation Protocol (RSVP) feature of Cisco 
IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote 
attacker to trigger an interface queue wedge on the affected device.

The vulnerability is due to improper parsing of UDP RSVP packets. An attacker 
could exploit this vulnerability by sending UDP port 1698 RSVP packets to the 
vulnerable device. An exploit could cause Cisco IOS Software and Cisco IOS XE 
Software to incorrectly process incoming packets, resulting in an interface 
queue wedge, which can lead to loss of connectivity, loss of routing protocol 
adjacency, and other denial of service (DoS) conditions.
 
Cisco has released free software updates that address this vulnerability.

Workarounds that mitigate this vulnerability are available.

This advisory is available at the following link: 
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-rsvp

Note: The September 25, 2013, Cisco IOS Software Security Advisory bundled 
publication includes eight 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 September 
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_sep13.html
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