Mybb ougc awards plugin 1.8.3 persistent crosssite scripting Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2019-01-07 | Type : webapps | Platform : php
This exploit / vulnerability Mybb ougc awards plugin 1.8.3 persistent crosssite scripting is for educational purposes only and if it is used you will do on your own risk!

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# Exploit Title: MyBB OUGC Awards Plugin v1.8.3 - Cross-Site Scripting
# Date: 12/31/2018
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]pm.me
# Software Link: https://community.mybb.com/mods.php?action=view&pid=396
# Version: 1.8.3
# Tested on: Ubuntu 18.04
# CVE: CVE-2019-3501


1. Description:
OUGC Awards plugin for MyBB forum allows admins and moderators to grant awards to users which displays on profiles/posts. The reason input isn't sanitized on awards page and user profiles.


2. Proof of Concept:

- Have a mod account level or higher
- Go to Manage Awards in ModCP
- Give an award to a user and input payload for reason <script>alert('XSS')</script>

- Payload executes when viewing award on awards.php and user profiles.


3. Solution:
Update to 1.8.19