Re: Malicious file upload in .JPG or GIF format

[bugtraq () cgisecurity net]

Try a poison null byte attack (http://archives.neohapsis.com/archives/snort/2000-11/0248.html).

- Robert 
http://www.cgisecurity.com/
http://www.webappsec.org/
http://www.qasec.com/
 

> Dear List,
>
> I'm doing Web Application Pen-Testing. In one of the pages there is an 
> option to upload an image(.JPG or .GIF). 
> How a hacker can exploit it and what are the chances of uploading a 
> malicious .exe file (virus kind of stuff) in .JPG or .GIF format by 
> changing its extension.
>
>
> Thanks in advance,
>
> Whitehat
>
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