CVE-2022-21423 : Security Advisory and Response

This article provides detailed information about CVE-2022-21423, a vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB) affecting versions 8.0.28 and prior.

Understanding CVE-2022-21423

CVE-2022-21423 is a potentially harmful vulnerability that can be exploited by a high-privileged attacker with network access, leading to a partial denial of service in MySQL Server.

What is CVE-2022-21423?

The vulnerability in Oracle MySQL's MySQL Server (component: InnoDB) impacts versions 8.0.28 and earlier. An attacker with network access can compromise the server, resulting in a partial denial of service (partial DOS) and unauthorized actions.

The Impact of CVE-2022-21423

Successful exploitation of this vulnerability can enable a high-privileged attacker to compromise MySQL Server, potentially causing a partial denial of service, impacting the availability of the server.

Technical Details of CVE-2022-21423

This section covers specific technical details related to CVE-2022-21423.

Vulnerability Description

The vulnerability allows attackers with network access to compromise MySQL Server and cause a partial denial of service. It is rated with a CVSS 3.1 Base Score of 2.7 (Availability impacts).

Affected Systems and Versions

The vulnerability affects MySQL Server versions 8.0.28 and earlier.

Exploitation Mechanism

The vulnerability is easily exploitable via multiple protocols, allowing high-privileged attackers to compromise MySQL Server.

Mitigation and Prevention

To address CVE-2022-21423, immediate steps and long-term security practices need to be implemented.

Immediate Steps to Take

Update MySQL Server to a non-vulnerable version immediately.
Monitor server logs for any unusual activity.

Long-Term Security Practices

Implement network segmentation to reduce the attack surface.
Regularly update and patch MySQL Server to prevent future vulnerabilities.

Patching and Updates

Stay informed about security alerts from Oracle Corporation and regularly apply patches to secure MySQL Server.