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| Subject: | Re: [Snort-sigs] False Positive |
|---|---|
| Date: | Tue, 18 Jan 2005 14:37:13 -0700 |
fmonkey@fmonkey.net wrote:
Rule: WEB-IIS %2E-asp access -- Sid: 972 -- Summary: Google toolbar encodes period when checking on updates to web pages. -- Impact: N/A -- Detailed Information: It appears the Google toolbar checks for the "freshness" of a page, and encodes the URL of the page as part of the request to the Google server. This triggers the alert, but there is no attack.
This is a known issue with this rule. You can try this fix, which I have proposed a while ago: alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"WEB-IIS %2E-asp access"; flow:to_server,established; uricontent:".asp"; nocase; content:"%2Easp"; nocase; pcre:"/^\s*[A-Z]+[ \t]+[^\s\?]*(?i)%2Easp\b/m"; reference:bugtraq,1814; reference:cve,CAN-1999-0253; classtype:web-application-activity; sid:makeyourown; rev:makeyourown;) Cheers, nnposter ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Snort-sigs mailing list Snort-sigs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/snort-sigs
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