Multiple vulnerabilities in the H.323 protocol implementation for Cisco IOS 11.3T through 12.2T allow remote attackers to cause a denial of service and possibly execute arbitrary code, as demonstrated by the NISCC/OUSPG PROTOS test suite for the H.225 protocol.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4884
http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
http://www.securitytracker.com/id?1008685
http://www.securityfocus.com/bid/9406
http://www.kb.cert.org/vuls/id/749342
http://www.cisco.com/warp/public/707/cisco-sa-20040113-h323.shtml