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Network Security Snort-Signatures
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Re: [Snort-sigs] New adobe vulnerability

Subject: Re: [Snort-sigs] New adobe vulnerability
Date: Thu, 19 Aug 2004 01:09:38 -0500
nnposter@users.sourceforge.net wrote:

You have not considered the impact of http_inspect. Therefore you need to look for "real" ASCII zero, not its encoding and do not forget to toss in nocase and flow:


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"BLEEDING-EDGE Adobe Acrobat Reader Malicious URL Null Byte"; flow:to_server,established; uricontent:".pdf|00|"; nocase;
reference:cve,2004-0629; classtype:web-attack; sid:2002001; rev:???;)

Good advice, thanks. New version is posted.

Matt


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