bugtraq - Re: Multiple Vendor Unusual MIME Encoding Content Filter Bypass

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Date: Thu, 07 Dec 2006 12:57:35 -0500
From: Luke Borg <lborg@...systems.com>
To: Tomasz Kojm <tkojm@...mav.net>
Cc: Hendrik Weimer <hendrik@...o.de>, bugtraq@...urityfocus.com,
	info@...persky.com, info@...ecure.com
Subject: Re: Multiple Vendor Unusual MIME Encoding Content Filter Bypass

How so? I can't see why it's anyones responsibility's to fix a 
corporations code, Especially if they don't have you on their payroll.


Tomasz Kojm wrote:
> On Wed, 06 Dec 2006 15:24:25 +0100
> Hendrik Weimer <hendrik@...o.de> wrote:
>
>   
>> Several e-mail virus scanners can be tricked into passing an EICAR
>> test file if the following conditions are met:
>>
>> 1. the EICAR file is encoded in Base64 including characters not in the
>>    standard alphabet (e.g. whitespaces) and
>> 2. the part containing the EICAR file is nested within one or several
>>    levels of multipart/mixed content.
>>
>> Details and PoC can be found at:
>> http://www.quantenblog.net/security/virus-scanner-bypass
>>     
>
> That's _extremely_ irresponsible to disclose bugs without giving the vendors
> any chance to fix them and prepare new software releases.
>
>