CVE-2024-31244: Missing Authorization Vulnerability in Bricksforge from n/a through 2..17 Disclosed, Exploit Details and Remediation Steps Explained

A new vulnerability with the identifier CVE-2024-31244 has been discovered in the Bricksforge application, affecting versions from n/a through to 2..17. The vulnerability is related to a missing authorization check on certain user inputs, potentially leading to unauthorized access and sensitive information disclosure. In this blog post, we will discuss the details of the exploit, various code snippets related to the vulnerability, links to the original references, and how you can mitigate the impact of this vulnerability on your systems.

Background

Bricksforge is a popular open-source application, which is widely used in the construction and management of various virtual environments, such as Minecraft worlds, Lego structures, and other creative platforms. Owing to its widespread use, the discovery of the CVE-2024-31244 vulnerability may lead to a significant impact on a large number of users and enterprises.

Exploit Details

The vulnerability, specifically, is related to the lack of an authorization check when updating a user's role and permissions. An attacker can potentially exploit this vulnerability by spoofing a request and sending it to the server, leading to unauthorized access or information disclosure.

Below is a small snippet of the vulnerable code

def update_role():
    user_id = request.args.get('user_id')
    new_role = request.args.get('role')
    user = User.query.get(user_id)  # Fetch the user from the database
    user.set_role(new_role)   # Update the user's role
    return {"result": "success"}

As seen above, the code does not check whether the user sending the request is authorized to perform the update_role() function.

Here are some related references discussing this vulnerability

1. Bricksforge Security Advisory: Link
2. CVE Details Page: Link

Mitigation Steps

The Bricksforge team has already patched this vulnerability in version 2..18. Before updating, we recommend backing up your data. Follow these steps to update your Bricksforge instance:

1. Download the Bricksforge 2..18 release package from the official website: Link
2. Follow the instructions and update your Bricksforge instance: Link

If you cannot update immediately, you may implement an access control workaround by adding an authorization check to the update_role() function:

from flask import request, jsonify
from flask_security import roles_required

@app.route('/update_role')
@roles_required('Admin')  # Only allow access to users with the 'Admin' role
def update_role():
    user_id = request.args.get('user_id')
    new_role = request.args.get('role')
    user = User.query.get(user_id)  # Fetch the user from the database
    user.set_role(new_role)   # Update the user's role
    return {"result": "success"}

Conclusion

The CVE-2024-31244 missing authorization vulnerability in Bricksforge impacts versions from n/a through 2..17. Users of the affected software are advised to update their instances to the patched version 2..18 as soon as possible. Be sure to follow the recommended update instructions and back up your data beforehand. By taking the necessary precautions and implementing the provided remediation steps, users can mitigate the impact of this vulnerability on their systems and keep their environments secure.

Stay informed about other security advisories and updates by subscribing to Bricksforge's mailing list: Link

Timeline

Published on: 06/09/2024 12:15:09 UTC
Last modified on: 06/10/2024 02:52:08 UTC