CVE-2024-22209 : Exploit Details and Defense Strategies

This CVE record pertains to a vulnerability in the Open edX Platform where the XBlock custom auth does not respect JWT Scopes, potentially allowing unauthorized access to endpoints.

Understanding CVE-2024-22209

This section delves into the specifics of CVE-2024-22209, outlining its impact and technical details.

What is CVE-2024-22209?

CVE-2024-22209 involves an improper access control issue (CWE-284) within the Open edX Platform. Specifically, a user equipped with a JSON Web Token (JWT) and restricted scopes could exploit this flaw to access endpoints beyond their authorized permissions.

The Impact of CVE-2024-22209

The vulnerability poses a medium severity threat with a CVSS base score of 6.4. While the attack complexity is low, the confidentiality and integrity impacts are rated as low. However, this security issue can lead to unauthorized access to sensitive endpoints within the platform.

Technical Details of CVE-2024-22209

This section provides a closer look at the vulnerability's technical aspects, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability arises due to the XBlock custom auth failing to appropriately enforce JWT scopes, enabling users to exceed their access privileges and potentially compromise the platform's security.

Affected Systems and Versions

The affected system identified in this CVE is the Open edX Platform, particularly versions prior to commit 019888f. Users utilizing these vulnerable versions may be at risk of unauthorized access and potential security breaches.

Exploitation Mechanism

By leveraging the JWT and bypassing the scope restrictions, malicious actors could exploit this vulnerability to manipulate the platform's endpoints and access sensitive information beyond their intended permissions.

Mitigation and Prevention

To mitigate the risks associated with CVE-2024-22209, it is crucial to take immediate actions and implement long-term security practices.

Immediate Steps to Take

Users of the Open edX Platform should update to the patched version (commit 019888f) to remediate the vulnerability and prevent unauthorized access. Additionally, review and restrict user permissions to limit the impact of potential unauthorized access.

Long-Term Security Practices

In the long term, organizations should prioritize continuous monitoring of security configurations, conduct regular security audits, and promote user awareness on best practices for handling authentication tokens and permissions.

Patching and Updates

Staying up to date with software patches and security updates is imperative to address known vulnerabilities. Regularly check for security advisories and apply relevant patches promptly to strengthen the platform's security posture and mitigate risks.