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Re: FortiGuard: URL Filtering Application Bypass Vulnerability

from [3APA3A] Network Security [Permanent Link]
Subject: Re: FortiGuard: URL Filtering Application Bypass Vulnerability
Date: Fri, 4 Jan 2008 22:25:01 +0300 
Dear Danux,

--Friday, January 4, 2008, 2:27:58 AM, you wrote to vulnwatch@vulnwatch.org:


D> 1.- HTTP Requests are terminated by the CRLF characters.
D> 2.- Forcing to talk via HTTP/1.0 version so that dont send the host header.
D> 3.- Finally, by Fragmenting the GET or POST requests


D> Macula's Analysis: If you dont have properly installed some AV, HIPS,
D> etc, through this vuln, a workstation can connect to a malicious
D> "Hacking Site" and get infected.

 It  must  be  already  infected to issue request like this, because all
 standard software always add Host: header and do not fragment request.

D> Also through this vuln, you can
D> connect to different porn sites without problems. And no matter if its
D> or not multi-homed web sites. So we consider its not a low risk.

 O yeah.... It's great security risk. My morality may be affected.

-- 
~/ZARAZA http://securityvulns.com/
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