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Bypass Fortinet anti-virus using FTP
From: Mathieu Dessus <mdessus () gmail com>
Date: Mon, 13 Feb 2006 09:10:45 +0100

Bypass Fortinet anti-virus using FTP

Severity:          Low
Impact:            Bypass Fortinet anti-virus
Vulnerabilty type: Design error
Affected products: FortiGate v2.8
CVE reference:     CAN-2005-3057

Vulnerability Description:

It is possible to bypass the Fortinet anti-virus engine when sending
files over FTP under certain conditions. Those conditions will be
disclosed later since Fortinet has not fixed the problem yet.

This bug was tested on FortiOS v2.8MR10 and v3beta.


No solution yet.

Vendor Response:

07/28/2005 Vendor was first contacted by mail.
07/28/2005 He replyed to use is support web site to re-enter the information.
08/01/2005 The vendor asked for more information, which was provided
the same day.
08/04/2005 The vendor replyed that they have reproduced the problem.
01/04/2006 Status asked to the vendor.
02/06/2006 The vendor was informed that this information will be
published in 1 week.


Discovered by Mathieu Dessus (mdessus(a)gmail.com).
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