CVE-2024-0408: Security Advisory and Response

This CVE-2024-0408 vulnerability pertains to the Xorg-x11-server software, specifically a flaw in the GLX PBuffer code. The vulnerability was published by Red Hat on January 18, 2024.

Understanding CVE-2024-0408

This vulnerability in the X.Org server relates to the GLX PBuffer code and could potentially lead to a crash due to unlabeled objects and a NULL SID.

What is CVE-2024-0408?

The flaw in the X.Org server occurs because the GLX PBuffer code fails to call the XACE hook when creating the buffer, leaving it unlabeled. This can result in a crash when trying to access the resource with certain requests or creating other resources that depend on the buffer.

The Impact of CVE-2024-0408

The impact of this vulnerability is considered medium severity with a CVSS base score of 5.5. Although it requires low privileges to exploit and has a low attack complexity, it can have a high impact on availability.

Technical Details of CVE-2024-0408

This section provides more in-depth information about the vulnerability.

Vulnerability Description

The flaw allows for unlabeled objects in the X.Org server's GLX PBuffer code, leading to potential crashes when accessing affected resources.

Affected Systems and Versions

Xorg-server: Version 21.1.11 (Unaffected)
Xwayland: Version 23.2.4 (Unaffected)
Red Hat Enterprise Linux 7: Versions up to 1.20.4-27.el7_9 are affected.

Exploitation Mechanism

The exploitation of this vulnerability involves creating resources dependent on the unlabeled buffer, triggering a crash due to the absence of proper labeling.

Mitigation and Prevention

To mitigate the risks associated with CVE-2024-0408, immediate steps and long-term security practices can be implemented.

Immediate Steps to Take

As workarounds are not currently available that meet Red Hat's security criteria, it is important to monitor for updates and patches to address this vulnerability promptly.

Long-Term Security Practices

Implement robust security measures, regular system updates, and monitoring to detect any potential exploitation of vulnerabilities.

Patching and Updates

Stay informed about security advisories and apply patches or updates provided by the software vendor to mitigate the risk posed by CVE-2024-0408.