Digital Security Research Group [DSecRG] Advisory #DSECRG-08-029
Application: Dokeos E-Learning System
Versions Affected: 1.8.5
Vendor URL: http://dokeos.com/
Bug: Local File Include
Exploits: YES
Reported: 01.07.2008
Vendor response: 05.07.2008
Solution: YES
Date of Public Advisory: 17.07.2008
Authors: Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)
Description
***********
Dokeos E-Learning System system has local file include vulnerability in script user_portal.php
Vulnerable GET parameter "include".
Registered user can use this vulnerability.
Code
****
#################################################
if (!empty ($_GET['include']) && !strstr($_GET['include'], '/') && strstr($_GET['include'], '.html'))
{
include ('./home/'.$_GET['include']);
$pageIncluded = true;
}
else
..
#################################################
Example:
http://[server]/[installdir]/user_portal.php?include=..\..\..\..\..\..\.
.\..\..\..\..\..\..\boot.ini%00.html
Fix Information
***************
you can fix it following this official information http://www.dokeos.com/wiki/index.php/Security Or wait a new release
Fixing this issue can be done by replacing line 770 of /user_portal.php by:
if (!empty ($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/',$_GET['include']))
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)
Regards,
Digital Security Research Group [DSecRG]
________________________________________
DIGITAL SECURITY
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