Cisco Security Advisory – Cisco Unified Communications Manager (formerly Cisco CallManager) contains multiple denial of service (DoS) vulnerabilities that if exploited could cause an interruption of voice services. The Session Initiation Protocol (SIP), Skinny Client Control Protocol (SCCP) and Computer Telephony Integration (CTI) Manager services are affected by these vulnerabilities.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/86870/cisco-sa-20100303-cucm.txt
Source: https://packetstormsecurity.com/files/86870/Cisco-Security-Advisory-20100303-cucm.html