Secunia Security Advisory – Ubuntu has issued updates for php4/php5. This fixes some vulnerabilities, which potentially can be exploited by malicious people to cause a DoS (Denial of Service), conduct cross-site scripting attacks, bypass certain security restrictions, and to use a vulnerable system as an open mail relay.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/42535/sa18198.txt
Source: https://packetstormsecurity.com/files/42535/Secunia-Security-Advisory-18198.html