Found the culprit
SSL client trying to hand shake SSL on port 80
Jeff Lake, Richard Sammet and Thierry Zoller
gave me nice explanations
I have been able to reproduce these with
openssl s_client -connect y.y.y.y:80
(where y.y.y.y is our site IP)
log result :
y.y.y.z - - [09/Nov/2006:16:41:15 -0500] "\x80\x8c\x01\x03\x01" 200 14261
"-" "-"
this line shows no UA, no HTTP verb, ... only hex chars in request
running tcpdump, apache returns this string :
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>501 Method Not Implemented</title>
</head><body>
<h1>Method Not Implemented</h1>
<p>..... to /index.html not supported.<br />
</p>
</body></html>
without any HTTP header
neil : we still see a 200 response in logs but tcpdump shows
apache did not returned anything good
I'll take a deep look into Apache's config to see if we forgot any
Listen 443 (thanks Robert for pointing it out)
nick : we do not run Squirrel
thanks all for explanations
Have a nice day
Maxime Ducharme
-----Message d'origine-----
De : listbounce@securityfocus.com [mailto:listbounce@securityfocus.com] De
la part de Maxime Ducharme
Envoyé : 9 novembre, 2006 10:51
À : incidents@securityfocus.com
Objet : \x HTTP requests
Hello list
I see these HTTP request and I'm looking for more information :
...
x.x.x.1 - - [06/Nov/2006:17:33:23 -0500] "\x16\x03" 200 8 "-" "-"
x.x.x.2 - - [07/Nov/2006:16:26:21 -0500] "\x80m\x01\x03\x01" 200 8 "-" "-"
x.x.x.2 - - [07/Nov/2006:16:26:21 -0500] "\x80m\x01\x03" 200 8 "-" "-"
x.x.x.3 - - [08/Nov/2006:05:06:21 -0500] "\x80|\x01\x03\x01" 200 8 "-" "-"
Would it be someone attempting to send https request on my port 80 ?
Any clue would be appreciated
Have a nice day
Maxime Ducharme
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