MyBB Downloads 2.0.3 Cross Site Scripting

2018-04-0500:00:00

0xB9

packetstormsecurity.com

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`# Exploit Title: MyBB Downloads Plugin v2.0.3 - Persistent XSS  
# Date: 3/28/18  
# Author: 0xB9  
# Contact: luxorforums.com/User-0xB9 or 0xB9[at]protonmail.com  
# Software Link: https://community.mybb.com/mods.php?action=view&pid=854  
# Version: 2.0.3  
# Tested on: Ubuntu 17.10  
  
  
1. Description:  
It is a plugin which adds a page to download files. If enabled, regular members can add new downloads to the page after admin approval.  
  
  
2. Proof of Concept:  
  
Persistent XSS  
- Go to downloads.php page  
- Create a New Download  
- Add the following to the title <BODY ONLOAD=alert('XSS')>  
- Now when the admin goes to validate your download he will be alerted  
  
  
3. Solution:  
Update to the latest release  
  
Patch: https://github.com/vintagedaddyo/MyBB_Plugin-Downloads/pull/1/commits  
  
`

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