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Re: !!Rolling back Snort rule files!!
From: Miso Patel <miso.patel () gmail com>
Date: Fri, 29 Oct 2010 12:50:37 -0500

It looks like many of the MS Kodak imaging malformed tiff rules were from
TIFF downloads from Akamai and Deltacom ... looks like a lot of MSNBC news
sites.  I am running Snort with gzip decoding eneabled.  Anyone else seeing
this?

Thanks, I'm going to check our backups now.

Miso Patel, CISO

On Fri, Oct 29, 2010 at 12:35 PM, Joel Esler <jesler () sourcefire com> wrote:

There is not an option to use a "previous ruleset", you would have to
backup your previous ruleset before you update it, since they are in the
flat files.

What SIDs are giving you the problems?  Do you have pcaps for the traffic?

After I received your emails I checked my alerts and I don't have either
one of these (I'm not a good test case) alerting on my networks.  Any more
information you can provide?

J

On Oct 29, 2010, at 1:24 PM, Miso Patel wrote:

Today we installed the newest VRT community rules on our Snort sensors.
 Almost immediately we started seeing increased alert volume and further
investigation shows that these are all false positives. We see *tons* of
events for the Microsoft Kodak imaging malformed tiff rules along with other
alerts like Mozilla firefox image dragging exploit and more.

Right now the SIEM is swamped and I've made the decision to go back to
the old rules ... is there an easy way to do this?  I don't see them online
and my engineers tell me that there is not an option in Snort to instruct it
to use the previous ruleset (e.g. snort --use-prev).  Any help is much
appreciated.

Thank you.

Miso Patel, CISO

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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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