uricontent easily evaded on Apache

[Kanatoko <anvil () jumperz net>]

Apache web server allows clients to send blank line(CRLF)s
*BEFORE* sending a HTTP request. 
So one can send a HTTP request like this:
-----------------------------------------------
<CRLF>
GET /wwwboard/passwd.txt HTTP/1.0
User-Agent: httpc
Host: some.apache.host
<CRLF>
------------------------------------------------
In this case, Snort should trigger SID807, But it can not detect this attack.

-- 
Kanatoko<anvil () jumperz net>


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