WebWasher Classic is "a well known HTTP-URL/Popup/Script filtering proxy which is free for non commercial use".

A flaw in the design of WebWasher allows a malicious attacker to bypass firewall rules and ACLs and connect to the machine running WebWasher even when not permitted.

Vulnerable Systems:
* WebWasher Classic v3.3 and v.2.2.1 on Windows platform.

http://www.securiteam.com/windowsntfocus/5VP072KEUK.html