CVE-2021-2065 : What You Need to Know

A vulnerability has been discovered in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. This vulnerability affects versions 8.0.22 and prior, allowing a high privileged attacker with network access to compromise the MySQL Server. Successful exploitation of this vulnerability could lead to a denial of service (DOS) attack. The CVSS 3.1 Base Score is 4.9, indicating a medium severity with high availability impact.

Understanding CVE-2021-2065

This section aims to provide a detailed insight into the CVE-2021-2065 vulnerability.

What is CVE-2021-2065?

The CVE-2021-2065 vulnerability is present in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. It allows a high privileged attacker with network access to compromise the MySQL Server by causing a DOS attack.

The Impact of CVE-2021-2065

The impact of CVE-2021-2065 includes unauthorized ability to cause a hang or frequently repeatable crash, resulting in a complete denial of service of the MySQL Server. The CVSS 3.1 Base Score of 4.9 indicates a medium severity with high availability impact.

Technical Details of CVE-2021-2065

This section delves into the technical aspects of the CVE-2021-2065 vulnerability.

Vulnerability Description

The vulnerability allows a high privileged attacker with network access to compromise the MySQL Server, potentially leading to a complete denial of service.

Affected Systems and Versions

The vulnerability affects MySQL Server version 8.0.22 and prior.

Exploitation Mechanism

The vulnerability is easily exploitable via multiple protocols, enabling attackers to compromise the MySQL Server.

Mitigation and Prevention

Here are some key steps to mitigate and prevent the exploitation of CVE-2021-2065.

Immediate Steps to Take

Apply security patches and updates provided by Oracle to address the vulnerability.
Monitor network traffic for any suspicious activity targeting the MySQL Server.

Long-Term Security Practices

Regularly update MySQL Server to the latest versions to address known vulnerabilities.
Implement network segmentation to limit the exposure of the MySQL Server.
Enforce the principle of least privilege to restrict high privileged access.

Patching and Updates

Ensure timely installation of security patches and updates released by Oracle for MySQL Server to mitigate the CVE-2021-2065 vulnerability.