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| Subject: | Re: [Snort-sigs] False Positive on rule ID 1365 (WEB-ATTACKS rm command attempt) |
|---|---|
| Date: | Fri, 19 Nov 2004 13:18:22 -0600 |
This rule is in deleted.rules for a reason. On 0, "McKenzie, Omar" <Omar.McKenzie@frx.com> allegedly wrote:
<<snort-sid-template.txt>> Regards, Omar McKenzie, CISSP Information Security Engineer Forest Laboratories, Inc. Omar.McKenzie@frx.com (631) 858-7629
Content-Description: snort-sid-template.txt
# This is a template for submitting snort signature descriptions to # the snort.org website # # Ensure that your descriptions are your own # and not the work of others. References in the rules themselves # should be used for linking to other's work. # # If you are unsure of some part of a rule, use that as a commentary # and someone else perhaps will be able to fix it. # # $Id$ # # Rule: alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"WEB-ATTACKS rm command attempt"; flow:to_server,established; content:"rm%20"; nocase; classtype:web-application-attack; sid:1365; rev:5;) -- Sid: 1365 -- Summary: Attempted rm command access via web -- Impact: -- Detailed Information: -- Affected Systems: -- Attack Scenarios: -- Ease of Attack: -- False Positives: This rules seems to fire on legitimate that contain *rm%20; For example I have a web page that contains the phrase "LIBRARY FCRM EDOCS" and this rule fires each time the webpage is access. The rule may need to be modified to include a space before rm. -- False Negatives: -- Corrective Action: -- Contributors: -- Additional References:
+-----------------------------------------------------------------+
Nigel Houghton Research Engineer Sourcefire Inc.
Vulnerability Research Team
You know, I rather like this God fellow. Very theatrical,
you know. Pestilence here, a plague there. Omnipotence
...gotta get me some of that. - Stewart Griffin
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