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Re: 17494 Falsing on non IE6 systems
From: "Lay, James" <james.lay () wincofoods com>
Date: Wed, 27 Oct 2010 08:16:23 -0600

Ya count me in here...rev 1 is firing on just about everything....YAY
for us Registered users :)  While I understand the whole pay for rules
thing, holding out on releasing a fixed rule for 30 days, such as this
one, is kinda crappy.  Not releasing improved/new rules yes, but ones
that are broken like this...ya not so much.  Yet another rule disabled.

James

-----Original Message-----
From: Weir, Jason [mailto:jason.weir () nhrs org] 
Sent: Wednesday, October 27, 2010 7:08 AM
To: snort-sigs () lists sourceforge net
Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems

Thanks Joel,

Any chance the revision # could be included on the SID page

http://www.snort.org/search/sid/1-17494

That way I could check before posting to the list..

-J

-----Original Message-----
From: Joel Esler [mailto:jesler () sourcefire com]
Sent: Wednesday, October 27, 2010 9:02 AM
To: L0rd Ch0de1m0rt
Cc: Weir, Jason; snort-sigs () lists sourceforge net
Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems


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


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