PHP cURL 'safe_mode' and 'open_basedir' Restriction-Bypass Vulnerability

Summary
PHP is prone to a safe_mode and open_basedir restriction-bypass vulnerability. Successful exploits could allow an attacker to access files in unauthorized locations. This vulnerability would be an issue in shared-hosting configurations where multiple users can create and execute arbitrary PHP script code, with the safe_mode and open_basedir restrictions assumed to isolate the users from each other. PHP 5.2.9 is vulnerable other versions may also be affected.
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