bugtraq - OwnServer 1.0 Directory Transversal Vulnerability

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Date: Tue, 20 Jan 2004 23:11:36 +0200
From: "Rafel Ivgi, The-Insider" <theinsider@....net.il>
To: <bugtraq@...urityfocus.com>
Subject: OwnServer 1.0 Directory Transversal Vulnerability

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Application:    OwnServer (Used By Security Cameras Products)
Vendors:        http://www.anteco.co.il
Big Resellers:
                      http://www.anykeeper.com
                      http://www.sahar-systems.co.il

Versions:        <= 1.0
Platforms:       Windows
Bug:                Directory Transversal Vulnerability
Risk:                High
Exploitation:    Remote with browser
Date:               25 Dec 2003
Author:            Rafel Ivgi, The-Insider
e-mail:             the_insider@...l.com
web:                http://theinsider.deep-ice.com

#######################################################################

1) Introduction
2) Bug
3) The Code

#######################################################################

===============
1) Introduction
===============

OwnServer is a web server used as a webserver for watching security cameras
remotly.
It allows broadcasting live streaming video on the web through the built-in
webserver.

#######################################################################

======
2) Bug
======

The webserver uses a protection to avoid the directory traversal bug.
"//"  is replaced to  ""
"\." and "\.."  is replaced to  ""
"\"  is replaced to  "/"
"\\"  is replaced to  "//"

The webserver uses no protection to avoid the directory traversal bug.
The problem happens when the attacker uses the classic pattern "/../" that
allows him to see and download any file in the remote system knowing the
path.
This allows any attacker to : Read and download any local file, and in most
cases retrieve the machine's password files and invade it (using
ssh,ftp,http,netbios,samba etc...).

#######################################################################

===========
3) The Code
===========

http://<host>/../../boot.ini
http://<host>/../../../boot.ini
http://<host>/../../../../boot.ini
http://<host>/../../../../../boot.ini
http://<host>/../../../../../../boot.ini

#######################################################################

---
Rafel Ivgi, The-Insider
http://theinsider.deep-ice.com

"Things that are unlikeable, are NOT impossible."