phpBB 2.0.20
 

PHPBB Unauthorized HTTP Proxy Vulnerability
http://www.securityfocus.com/bid/17965/info

phpBB is prone to a vulnerability that could permit it to become an unauthorized HTTP proxy.
An attacker can exploit this issue to manipulate phpBB into becoming an HTTP proxy.

Exploit :

This is a famous Exploit.....
10q

@neM3Sis i read the article http://www.securityfocus.com/bid/17965/info but I can`t understand. Can u explain step by step. What I must put in avatar url for value.