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FortiGuard: URL Filtering Application Bypass Vulnerability
Jan 03 2008 11:27PM
Danux (danuxx gmail com)
Re: FortiGuard: URL Filtering Application Bypass Vulnerability
Jan 04 2008 07:25PM
3APA3A (3APA3A SECURITY NNOV RU)
--Friday, January 4, 2008, 2:27:58 AM, you wrote to vulnwatch (at) vulnwatch (dot) org [email concealed]:
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.
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