CVE-2024-21237 - A Deep Dive into the Vulnerability in MySQL Server Group Replication GCS Component

The CVE-2024-21237 is a security vulnerability that affects the MySQL Server product of Oracle MySQL. This particular vulnerability is found within the Server: Group Replication GCS component of the affected MySQL Server versions. It is important to understand the exploit details, affected server versions, and potential impact of this vulnerability, as a successful attack could result in a partial denial of service (DOS) on the compromised MySQL Server.

Exploit Details

The vulnerability is considered difficult to exploit and requires a high privileged attacker with network access via multiple protocols. The root cause of the vulnerability is yet to be determined, but if successfully exploited, it could result in unauthorized ability to cause a partial DOS for the MySQL Server.

Impact

This vulnerability has a CVSS (Common Vulnerability Scoring System) 3.1 base score of 2.2, representing a low impact on the availability of the MySQL Server. However, depending on the use case and environment of the server, a partial DOS attack could potentially disrupt critical services and cause operational disruptions.

CVSS Vector

The CVSS Vector for this vulnerability is: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

Code Snippet

While the specific details of the vulnerability and exploit are not disclosed, the following code snippet is a simplified example of enabling the Group Replication for MySQL Server:

SET GLOBAL group_replication_bootstrap_group=ON;
START GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=OFF;

This code snippet is not an actual exploit but illustrates the configuration aspect of enabling group replication for MySQL Server that could potentially be abused by an attacker.

For more information about this vulnerability, you can refer to the following links

1. Official CVE record: CVE-2024-21237
2. Oracle MySQL Security Advisory: CVE-2024-21237

Mitigation

As of now, no specific patch has been released to address this vulnerability. However, as a MySQL Server user, you can protect your server by:
1. Applying the principle of least privilege, by limiting the number of high privileged users on the system.
2. Monitoring and restricting the network access to your MySQL Server by utilizing firewalls and other network security measures.
3. Regularly updating your MySQL Server to the latest version and installing security patches as soon as they are available.

Conclusion

The CVE-2024-21237 vulnerability in MySQL Server’s Group Replication GCS component is a relatively low-impact security issue. However, understanding the potential risks and staying up-to-date with the latest security patches is essential for maintaining the security and integrity of your MySQL Server infrastructure.

Timeline

Published on: 10/15/2024 20:15:12 UTC
Last modified on: 10/16/2024 20:40:35 UTC