The Session Description Protocol (SDP) implementation in Cisco TelePresence Video Communication Server (VCS) and Cisco Expressway before X8.2 and Cisco TelePresence Conductor before XC2.4 allows remote attackers to cause a denial of service (mishandled exception and device reload) via a crafted media description, aka Bug IDs CSCus96593 and CSCun73192.
http://www.securitytracker.com/id/1031910
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150311-vcs