mailing list archives
Re: 17494 Falsing on non IE6 systems
From: "Weir, Jason" <jason.weir () nhrs org>
Date: Wed, 27 Oct 2010 09:07:41 -0400
Any chance the revision # could be included on the SID page
That way I could check before posting to the list..
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.
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
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
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.
On Wed, Oct 27, 2010 at 7:37 AM, Weir, Jason <jason.weir () nhrs org>
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
Microsoft Internet Explorer Long URL Buffer Overflow attempt";
flow:established,to_server; urilen:>260; content:"GET";
content:"HTTP|2F|1|2E|1|0D 0A|"; metadata:service http;
classtype:attempted-user; sid:17494; rev:1;)
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Re: 17494 Falsing on non IE6 systems Weir, Jason (Oct 27)