Secunia Security Advisory – Some vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to bypass certain security restrictions, cause a DoS (Denial of Service), and potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/64741/sa29426.txt
Source: https://packetstormsecurity.com/files/64741/Secunia-Security-Advisory-29426.html