Secunia Security Advisory – Some security issues and vulnerabilities have been reported in Nortel Communication Server, which can be exploited by malicious people to bypass certain security restrictions, disclose sensitive information, cause a DoS (Denial of Service), or potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/65515/sa29747.txt
Source: https://packetstormsecurity.com/files/65515/Secunia-Security-Advisory-29747.html