bugtraq - RE: Re: [xfocus-AD-051115]Multiple antivirus failedto scan malicous filename bypass vulnerability

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Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAANASp/bip1hHgg1O1cfiAEPCgAAAEAAAAMyBTt25hthMk9oKnYPFB7kBAAAAAA==@online.gateway.strangled.net>
Date: Wed, 16 Nov 2005 10:06:04 +0530
From: "Aditya Deshmukh" <aditya.deshmukh@...ine.gateway.strangled.net>
To: "'Thierry Zoller'" <Thierry@...ler.lu>,
	<alert7@...cus.org>
Cc: full-disclosure@...ts.grok.org.uk, vulnwatch@...nwatch.org,
	bugtraq@...urityfocus.com
Subject: RE: Re: [xfocus-AD-051115]Multiple antivirus
	failedto scan malicous filename bypass vulnerability


> axo>   Demonstration here:
> axo>   Choose a malicious file which would be detected, such as nc.exe,
> axo>   rename the file as nc??.exe (?? =Hex C0 D7 BA DC)
> axo>   Because these special names are unable directly to input, so if you
> axo>   want to run these file, you should use the following way:
> axo>   Uses the MS-DOS name specification, we can operate  file with
Open、
> axo>   Read、Write、 and duplicate。

> That means that if the user clicks on it using explorer.exe or
> iexplorer.exe the file won't be executed because even Microsoft
> Windows explorer is unable to parse the file?
 
It will be executed because the if windows is not able to 
Access the long file name then short file name is used to 
Access the file in +x or execute mode...


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