OSEC

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[Full-Disclosure] directory traversal in ParaChat Server 5.5

From: Donato Ferrante (fdonatoautistici.org)
Date: Tue Sep 28 2004 - 16:12:23 CDT

                           Donato Ferrante

Application: ParaChat Server
              http://www.parachat.com/

Version: 5.5

Bug: directory traversal

Date: 28-Sep-2004

Author: Donato Ferrante
              e-mail: fdonatoautistici.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:
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Vendor's Description:

"ParaChat Server v5.5 is a fast, easy and affordable way to host and
manage your own real-time communication software - for one web site,
or for multiple web sites."

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2. The bug:
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The server is not able to manage the sequence "..%5C/", that is
equal to "..\/", this lets an attacker to navigate through the
victim system simply using a web browser.

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3. The code:
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To test the vulnerability:

http://[host]:7877/..%5C/..%5C/

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4. The fix:
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Vendor was contacted.
Bug will be fixed in the next version.

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