Critical PHP Remote Vulnerability Introduced in Fix for PHP Hashtable Collision DOS One Security Fix Introduces Another Today, Stefan Esser (@i0n1c) reported a critical remotely exploitable vulnerability in PHP 5.3.9 (update assigned CVE-2012-0830). The funny thing is that this vulnerability was introduced in the fix for the hash collision DOS (CVE-2011-4885) reported in December. The Vulnerable F