Secunia Security Advisory – Ubuntu has issued an update for php4 and php5. This fixes some vulnerabilities, which can be exploited by malicious, local users to bypass certain security restrictions and by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50810/sa22331.txt
Source: https://packetstormsecurity.com/files/50810/Secunia-Security-Advisory-22331.html