CERT Advisory CA-2004-01 – A number of vulnerabilities have been discovered in various implementations of the multimedia telephony protocol H.323. Voice over Internet Protocol (VoIP) and video conferencing equipment and software can use these protocols to communicate over a variety of computer networks. Exploitation of these vulnerabilities may result in the execution of arbitrary code or cause a denial of service, which in some cases may require a system reboot.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/32511/CA-2004-01.H323.txt
Source: https://packetstormsecurity.com/files/32511/CA-2004-01.H323.txt.html