PHP versions 5.2.10 and 5.3.0 suffer from a memory disclosure vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80231/php-memdisclose.txt
Source: https://packetstormsecurity.com/files/80231/PHP-5.2.10-5.3.0-Memory-Disclosure.html