Secunia Security Advisory – Gentoo has issued an update for asterisk. This fixes some weaknesses and vulnerabilities, which can be exploited by malicious people to identify valid user accounts and cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77220/sa34982.txt
Source: https://packetstormsecurity.com/files/77220/Secunia-Security-Advisory-34982.html