The SIP module in Cisco TelePresence Video Communication Server (VCS) before 8.1 allows remote attackers to cause a denial of service (process failure) via a crafted SDP message, aka Bug ID CSCue97632.
http://secunia.com/advisories/56592
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140122-vcs
http://tools.cisco.com/security/center/viewAMBAlert.x?alertId=32409
http://www.securityfocus.com/bid/65076