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vendor:
MyBB
by:
0xB9
5.4
CVSS
MEDIUM
Cross Site Scripting
79
CWE
Product Name: MyBB
Affected Version From: 1.0
Affected Version To: 1.0
Patch Exists: NO
Related CWE: CVE-2018-14724
CPE: 2.3:a:mybb:mybb:1.0
Metasploit: N/A
Other Scripts: N/A
Platforms Tested: Ubuntu 18.04
2018

MyBB Bans List – Cross Site Scripting

Adds bans.php page, showing a list of banned users and the reason of ban. Any forum user that's a mod can ban users and input a payload into the ban reason which gets executed on the bans.php page.

Mitigation:

Ensure that user input is properly sanitized and validated before being used in the application.
Source

Exploit-DB raw data:

# Exploit Title: MyBB Bans List - Cross Site Scripting
# Date: 7/25/2018
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]pm.me
# Software Link: https://community.mybb.com/mods.php?action=view&pid=423
# Version: 1.0
# Tested on: Ubuntu 18.04
# CVE: CVE-2018-14724


1. Description:
Adds bans.php page, showing a list of banned users and the reason of ban. 

Any forum user that's a mod can ban users and input a payload into the ban reason which gets executed on the bans.php page.
 

2. Proof of Concept:

- Have a mod account
- Ban a user
- Input the following for reason of the ban   <script>alert('XSS')</script>
- Anyone to view page will execute payload

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