Secunia Security Advisory – Debian has issued an update for php4. This fixes some vulnerabilities, which can be exploited by malicious, local users to bypass certain security restrictions, malicious users to disclose potentially sensitive information or compromise a vulnerable system, and by malicious people to compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56271/sa25025.txt
Source: https://packetstormsecurity.com/files/56271/Secunia-Security-Advisory-25025.html