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Cisco Security Advisory - Cisco IOS Software Resource Reservation Protocol Interface Queue Wedge Vulnerability (cisco-sa-20130925-rsvp)
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)
- ----------------------------------------------------------------------

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-2013092
5-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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