Unspecified vulnerability in Cisco Unified Communications Manager (CUCM) 5.0, 5.1, and 6.0, and IOS 12.0 through 12.4, allows remote attackers to execute arbitrary code via a malformed SIP packet, aka CSCsi80102.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5851
http://www.vupen.com/english/advisories/2007/2816
http://www.securityfocus.com/bid/25239
http://www.cisco.com/en/US/products/products_security_advisory09186a0080899653.shtml
http://securitytracker.com/id?1018538