CVE-2023-24510 : What You Need to Know

This CVE record was published on June 5, 2023, by Arista regarding a vulnerability affecting platforms running EOS, where a malformed DHCP packet could lead to the DHCP relay agent restarting.

Understanding CVE-2023-24510

This section delves into the details of CVE-2023-24510, its impact, technical aspects, and mitigation strategies.

What is CVE-2023-24510?

CVE-2023-24510 pertains to a vulnerability on platforms running Arista EOS. Specifically, a malformed DHCP packet can trigger the DHCP relay agent to restart, potentially leading to service disruptions and security risks.

The Impact of CVE-2023-24510

The impact of this vulnerability is rated as HIGH based on the CVSS v3.1 scoring system. It has a base score of 7.5, indicating a significant risk to the availability of the affected systems.

Technical Details of CVE-2023-24510

This section will cover the specific technical aspects of CVE-2023-24510, including the vulnerability description, affected systems, and how the exploitation may occur.

Vulnerability Description

The vulnerability is categorized under CWE-755 (Improper Handling of Exceptional Conditions) and stems from the mishandling of malformed DHCP packets, leading to a restart of the DHCP relay agent.

Affected Systems and Versions

The vulnerability affects Arista Networks' Arista EOS versions 4.25.0F to 4.29.1F. Systems with specific configurations related to DHCP server commands are vulnerable to exploitation.

Exploitation Mechanism

Exploiting CVE-2023-24510 involves sending a malformed DHCP packet to the affected system, triggering the DHCP relay agent restart under certain configuration conditions.

Mitigation and Prevention

In response to CVE-2023-24510, it is crucial to implement both immediate steps and long-term security practices to mitigate the risk and secure the affected systems effectively.

Immediate Steps to Take

One immediate step to remediate CVE-2023-24510 is to apply the provided hotfix, which addresses the vulnerability in the affected versions. The hotfix should be applied to specific releases outlined by Arista.

Long-Term Security Practices

To enhance long-term security, organizations should regularly review and update their network configurations, apply security patches promptly, and conduct routine security assessments to identify and address vulnerabilities.

Patching and Updates

Arista has released fixes for CVE-2023-24510 in subsequent versions of Arista EOS, starting from 4.29.2F and extending to other train versions, ensuring that the vulnerability is addressed in updated software releases.