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Re: Plugin false positive?

from [Michel Arboi] Network Security [Permanent Link]
Subject: Re: Plugin false positive?
Date: Thu, 23 Jun 2005 10:49:25 +0200 
On Wed Jun 22 2005 at 21:45, Max Andersen wrote:


GET /%5c/ HTTP/1.1


Wrong. You need to give a Host field.


Anyone got an idea on why Nessus reports a positive?


1. You are right as far as the %00 is concerned: something is missing.
2. Although the code is not clear, the plugin checks that there is no
directory index with a normal / request (some servers have no
index.html page). So it should not do a FP.


Rather than using Telnet, try something like this:
echo -e 'GET /%00/ HTTP/1.1\r\nHost: yourhost\r\n\r\n' | nc youhost 80

I'll add some debug messages (-> nessusd.dump) to this plugin, just
in case.

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