DSECRG-08-029.txt

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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  
tel/fax: +7(812)703-1547  
tel: +7(812)430-9130  
e-mail: [email protected]  
web: www.dsec.ru  
  
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