Secunia Security Advisory – Ubuntu has issued an update for apache2. This fixes some vulnerabilities, which can potentially be exploited by malicious people to cause a DoS (Denial of Service) or compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80240/sa36233.txt
Source: https://packetstormsecurity.com/files/80240/Secunia-Security-Advisory-36233.html

