Cisco Video Communication Server Session Initiation Protocol Packet Processing Denial of Service Vulnerability

A vulnerability in the Session Initiation Protocol (SIP) implementation of the Cisco Video Communications Server (VCS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to a malformed SIP header message. An attacker could exploit this vulnerability by manipulating the SIP URI. An exploit could allow the attacker to cause a disruption of service to the application.

Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.

This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160516-vcs[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160516-vcs”]