Secunia Security Advisory – Ubuntu has issued an update for squid. This fixes multiple vulnerabilities, 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/86434/sa38572.txt
Source: https://packetstormsecurity.com/files/86434/Secunia-Security-Advisory-38572.html