CVE-2021-2030 : What You Need to Know

A vulnerability has been identified in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. This vulnerability affects versions 8.0.21 and prior, allowing a high privileged attacker with network access to compromise the MySQL Server. Successful exploitation can lead to a denial of service (DoS) by causing the server to crash or hang.

Understanding CVE-2021-2030

This section delves into the details surrounding CVE-2021-2030, outlining the impact, technical aspects, and mitigation strategies.

What is CVE-2021-2030?

The vulnerability lies in the MySQL Server product of Oracle MySQL, affecting versions 8.0.21 and earlier. It is deemed easily exploitable, granting a high privileged attacker the ability to compromise MySQL Server via network access.

The Impact of CVE-2021-2030

Successful exploitation of this vulnerability can result in a complete denial of service (DoS) scenario, causing the MySQL Server to crash or hang. The CVSS 3.1 Base Score is 4.9, with a high impact on availability.

Technical Details of CVE-2021-2030

In this section, we explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism in detail.

Vulnerability Description

The vulnerability in the Server Optimizer component of MySQL Server allows a high privileged attacker with network access to compromise the server, leading to frequent crashes or hangs in the server, resulting in a complete denial of service.

Affected Systems and Versions

Versions 8.0.21 and prior of the MySQL Server product by Oracle Corporation are impacted by this vulnerability.

Exploitation Mechanism

Attackers with high privileges and network access can exploit this vulnerability to compromise the MySQL Server and cause it to crash or hang, leading to a denial of service.

Mitigation and Prevention

This section focuses on immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

It is recommended to apply security patches provided by Oracle Corporation to mitigate the vulnerability. Additionally, restrict network access to the MySQL Server to trusted entities only.

Long-Term Security Practices

Implement network segmentation, regularly update and patch software, and conduct security audits to enhance the overall security posture.

Patching and Updates

Ensure that the MySQL Server is regularly updated with the latest security patches released by Oracle Corporation to address vulnerabilities and enhance security.