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Network Security Snort-Signatures
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Re: [Snort-sigs] Another false positive - sid:2435

Subject: Re: [Snort-sigs] Another false positive - sid:2435
Date: Sat, 19 Mar 2005 11:03:46 +1100
Paul Schmehl wrote:

--On Friday, March 18, 2005 05:48:45 PM -0500 Scott Dexter <scott.dexter@gmail.com> wrote:


With a space you always run the chance of a false negative too,


Can you give an example?

If you're looking for files named foo.eml, what could follow eml without "screwing up" the filename?

Strictly speaking, ";" comes to mind. "?" is another, or even "&" or "/".

Although looking at it in the context of the file format, EMF (not to be confused with EML) is a graphics format and i dont think should ever take input (but i may be wrong, never checked).

So that takes "?" out of the equation. There are probably more that i have missed.





Regards,

Chris.


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