Secunia Security Advisory – Debian has issued an update for php4. This fixes some vulnerabilities, which can be exploited by malicious people to bypass certain security restrictions, cause a DoS (Denial of Service), and compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/51763/sa22713.txt
Source: https://packetstormsecurity.com/files/51763/Secunia-Security-Advisory-22713.html