Secunia Security Advisory – Some vulnerabilities have been reported in Nortel Multimedia Communication Server 5100, which can be exploited by malicious people to bypass certain security restrictions, conduct spoofing attacks, or cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70763/sa32203.txt
Source: https://packetstormsecurity.com/files/70763/Secunia-Security-Advisory-32203.html