Secunia Security Advisory – A vulnerability has been reported in Nortel SIP Multimedia PC Client, which can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67699/sa30854.txt
Source: https://packetstormsecurity.com/files/67699/Secunia-Security-Advisory-30854.html