CVE-2011-2561 Information

Description

The SIP process in Cisco Unified Communications Manager (aka CUCM formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP) which allows remote attackers to cause a denial of service (service outage) via a crafted call aka Bug ID CSCtc61990.

Reference

http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml