CVE-2024-0584: Exploit Details and Defense Strategies

This CVE record pertains to a use-after-free issue found in igmp_start_timer in the network sub-component of the Linux Kernel. The vulnerability allows a local user to exploit a refcnt use-after-free issue when receiving an igmp query packet, resulting in a kernel information leak.

Understanding CVE-2024-0584

This section delves into the details of CVE-2024-0584, outlining its impact, technical aspects, affected systems, and mitigation strategies.

What is CVE-2024-0584?

The CVE-2024-0584 vulnerability is a use-after-free flaw discovered in igmp_start_timer in the Linux Kernel's network sub-component. It enables a local user to trigger a refcnt use-after-free issue by receiving a malicious igmp query packet, leading to a kernel information leak.

The Impact of CVE-2024-0584

This vulnerability poses a moderate risk as it allows an attacker with local access to execute arbitrary code or obtain sensitive information from the affected system.

Technical Details of CVE-2024-0584

In this section, we will explore the technical details of CVE-2024-0584, including vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability resides in igmp_start_timer in net/ipv4/igmp.c within the Linux Kernel. By exploiting this flaw, a local user can observe a refcnt use-after-free issue when receiving an igmp query packet, leading to a kernel information leak.

Affected Systems and Versions

Multiple versions of Red Hat Enterprise Linux (6, 7, 8, and 9) and Kernel are affected by CVE-2024-0584. While some versions are marked as unaffected, it is essential to ensure proper mitigation measures are implemented.

Exploitation Mechanism

The exploitation of this vulnerability involves a local user sending a crafted igmp query packet to the target system to trigger the use-after-free issue and exploit the kernel information leak.

Mitigation and Prevention

To address CVE-2024-0584 and enhance system security, it is crucial to follow immediate steps, adopt long-term security practices, and apply relevant patches and updates.

Immediate Steps to Take

Disable unnecessary services to reduce the attack surface.
Implement strict access controls and user permissions to limit potential exploit opportunities.
Monitor network traffic for any suspicious activity related to igmp queries.

Long-Term Security Practices

Regularly update the system with the latest security patches and fixes to mitigate known vulnerabilities.
Conduct routine security audits and penetration testing to identify and address potential risks.
Educate users on best practices for maintaining system security and preventing exploitation attempts.

Patching and Updates

Refer to the respective vendors' security advisories for available patches and updates to address CVE-2024-0584. Stay proactive in patch management to enhance the overall security posture of the system.