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Re: 17494 Falsing on non IE6 systems
From: Joel Esler <jesler () sourcefire com>
Date: Wed, 27 Oct 2010 09:01:50 -0400

Current revision on this rule is rev:3.  It looks nothing like the below.

Thanks for the feedback Jason.

Joel

On Oct 27, 2010, at 8:51 AM, L0rd Ch0de1m0rt wrote:

Yea, this is a terribly written rule, especially with Web 2.0
technologies and advertising companies preferring to create ginormous
URIs.  It's not browser specific ... all modern browsers support
URIs>206 bytes and the RFC doesn't specify a limit....

Are you running the latest version of this rule?  I could be thinking
of a different rule but I thought that when this one came out it
everyone started complaining about it and they disabled it.  I
recommend all who are running it to disable it.

-L0rd C.

On Wed, Oct 27, 2010 at 7:37 AM, Weir, Jason <jason.weir () nhrs org> wrote:
Tons of false positives on machines running IE7 & 8...

Maybe do a content match on the IE6 user agent - something like
content:"compatible; MSIE 6."

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"WEB-CLIENT
Microsoft Internet Explorer Long URL Buffer Overflow attempt";
flow:established,to_server; urilen:>260; content:"GET"; http_method;
content:"HTTP|2F|1|2E|1|0D 0A|"; metadata:service http;
reference:bugtraq,19667; reference:cve,2006-3869;
classtype:attempted-user; sid:17494; rev:1;)

Jason


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------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store 
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
Snort-sigs mailing list
Snort-sigs () lists sourceforge net
https://lists.sourceforge.net/lists/listinfo/snort-sigs

--
Joel Esler
302-223-5974


------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store 
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
Snort-sigs mailing list
Snort-sigs () lists sourceforge net
https://lists.sourceforge.net/lists/listinfo/snort-sigs


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