Snort mailing list archives

Re: Couple sigs


From: "lists () packetmail net" <lists () packetmail net>
Date: Mon, 10 Sep 2012 11:09:41 -0500

On 09/10/12 11:00, Alex Kirk wrote:
single rule with a PCRE

I'm kind of partial to:

file_data; content:"<iframe "; nocase; content:"visibility|3a|hidden";
within:100; nocase; pcre:"/\x3ciframe[^\x3e]+[heigwdth]{5,6}[^\x3d]*?=[0-1][^\d]/i";

Not really sure though how to make that one performance friendly since the PCRE
engine may be invoked often.

Either way, good conversation James and Alex, I believe this theme to be very
useful.

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