Secunia Security Advisory – Some vulnerabilities have been reported in Asterisk, 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/80408/sa36227.txt
Source: https://packetstormsecurity.com/files/80408/Secunia-Security-Advisory-36227.html