[Snort-users] Receiving alerts for a disabled rule

Anshuman Anil Deshmukh anshuman at ...16510...
Fri Feb 28 08:15:30 EST 2014


Hi Joel,



The rule is disabled. I even restarted the snort machine but still alerts for this rule are getting generated. Please help.



Here is the actual rule-



# alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"DOS generic web server hashing collision attack"; sid:20825; gid:3; rev:8; classtype:attempted-dos; reference:cve,2011-3414; reference:url,events.ccc.de/congress/2011/Fahrplan/events/4680.en.html; reference:url,technet.microsoft.com/en-us/security/advisory/2659883; reference:url,technet.microsoft.com/en-us/security/bulletin/MS11-100; reference:cve,2012-0830; reference:cve,2010-1899; reference:cve,2011-5037; metadata: engine shared, soid 3|20825, service http;)



Regards,

Anshuman





From: Joel Esler (jesler) [mailto:jesler at ...589...]
Sent: Thursday, February 20, 2014 9:06 PM
To: Anshuman Anil Deshmukh
Cc: snort-users at lists.sourceforge.net
Subject: Re: [Snort-users] Receiving alerts for a disabled rule



If you are receiving the alert from the rule, then it is either:



A) Not disabled

B) You didn't restart Snort after you disabled it.



--
Joel Esler
Threat Intelligence Team Lead
Open Source Manager
Vulnerability Research Team



On Feb 20, 2014, at 7:03 AM, Anshuman Anil Deshmukh <anshuman at ...16510...<mailto:anshuman at ...16510...>> wrote:





   Hi,



   Recently I found that I am getting alerts for one of the rule which is commented out. What could be the possible reason for generating such alert when the rule is disabled?



   Here are my setup details below.



   Snort version: Version 2.9.5 GRE (Build 103)

   Barnyard version: Version 2.1.9 (Build 263) - XFF patch (version 2)

   Rules are updating using pulledpork version 0.70 where all rules reside in one single file



   Below are the references of the actual rule and the alert generated on SNORBY.





   <image004.jpg>





   Thanks and Regards,

   Anshuman

   Information Security-Analyst




   "Legal Disclaimer: This electronic message and all contents contain information from Cybage Software Private Limited which may be privileged, confidential, or otherwise protected from disclosure. The information is intended to be for the addressee(s) only. If you are not an addressee, any disclosure, copy, distribution, or use of the contents of this message is strictly prohibited. If you have received this electronic message in error please notify the sender by reply e-mail to and destroy the original message and all copies. Cybage has taken every reasonable precaution to minimize the risk of malicious content in the mail, but is not liable for any damage you may sustain as a result of any malicious content in this e-mail. You should carry out your own malicious content checks before opening the e-mail or attachment." www.cybage.com<http://www.cybage.com/>

   <image001.png>------------------------------------------------------------------------------
   Managing the Performance of Cloud-Based Applications
   Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
   Read the Whitepaper.
   http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk_______________________________________________
   Snort-users mailing list
   Snort-users at lists.sourceforge.net<mailto:Snort-users at ...973...et>
   Go to this URL to change user options or unsubscribe:
   https://lists.sourceforge.net/lists/listinfo/snort-users
   Snort-users list archive:
   http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

   Please visit http://blog.snort.org<http://blog.snort.org/> to stay current on all the latest Snort news!





"Legal Disclaimer: This electronic message and all contents contain information from Cybage Software Private Limited which may be privileged, confidential, or otherwise protected from disclosure. The information is intended to be for the addressee(s) only. If you are not an addressee, any disclosure, copy, distribution, or use of the contents of this message is strictly prohibited. If you have received this electronic message in error please notify the sender by reply e-mail to and destroy the original message and all copies. Cybage has taken every reasonable precaution to minimize the risk of malicious content in the mail, but is not liable for any damage you may sustain as a result of any malicious content in this e-mail. You should carry out your own malicious content checks before opening the e-mail or attachment." 
www.cybage.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.snort.org/pipermail/snort-users/attachments/20140228/3cff19cb/attachment.html>


More information about the Snort-users mailing list