Home page logo
/

snort logo Snort mailing list archives

Re: International Domain Name access
From: James Lay <jlay () slave-tothe-box net>
Date: Tue, 7 May 2013 17:37:28 -0600

Good catch…fixed is below..thanks RM! 

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY International Domain Name web access"; 
flow:to_server,established; content:"Host|3a|"; http_header; content:"xn--"; http_header; within:100; 
classtype:trojan-activity; metadata:ruleset community; 
reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; sid:10000052; rev:1;)


Hi James,

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2007-3164

Maybe missed first http_header on first content ?

Regards
Rmkml


De : James Lay <jlay () slave-tothe-box net>
À : Snort-sigs <snort-sigs () lists sourceforge net> 
Envoyé le : Mercredi 8 mai 2013 0h58
Objet : [Snort-sigs] International Domain Name access

Just had a hootin good time here....never seen a host like this before:

xn----4tbbdcdd.xn--p1ai

The below should alert on web access...not sure if I'll sig up DNS 
requests.

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY 
International Domain Name web access"; flow:to_server,established; 
content:"Host|3a|"; content:"xn--"; http_header; within:100; 
classtype:trojan-activity; metadata:ruleset community; 
reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; 
sid:10000052; rev:1;)

Maybe useful, maybe not.

James

------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and 
their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may
_______________________________________________
Snort-sigs mailing list
Snort-sigs () lists sourceforge net
https://lists.sourceforge.net/lists/listinfo/snort-sigs
http://www.snort.org


Please visit http://blog.snort.org for the latest news about Snort!



------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and 
their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may
_______________________________________________
Snort-sigs mailing list
Snort-sigs () lists sourceforge net
https://lists.sourceforge.net/lists/listinfo/snort-sigs
http://www.snort.org


Please visit http://blog.snort.org for the latest news about Snort!

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]