CVE-2021-2060 : What You Need to Know

A vulnerability has been identified in the Oracle MySQL Server, specifically in the Optimizer component. This vulnerability affects versions 5.6.50 and prior, 5.7.32 and prior, as well as 8.0.22 and prior. An attacker with high privileges and network access via multiple protocols can exploit this vulnerability, potentially leading to a denial of service (DOS) attack on the MySQL Server.

Understanding CVE-2021-2060

This section will provide detailed insights into the CVE-2021-2060 vulnerability.

What is CVE-2021-2060?

The vulnerability in Oracle MySQL Server allows a high privileged attacker with network access to compromise the server, potentially causing a DOS attack by crashing the server. The CVSS 3.1 Base Score for this vulnerability is 4.9, indicating medium severity with high availability impact.

The Impact of CVE-2021-2060

Successful exploitation of this vulnerability can allow unauthorized access to disrupt the MySQL Server's availability by causing it to hang or crash repeatedly, leading to a denial of service situation.

Technical Details of CVE-2021-2060

In this section, we will delve into the technical details of the CVE-2021-2060 vulnerability.

Vulnerability Description

The vulnerability lies in the Optimizer component of Oracle MySQL Server, allowing attackers to exploit the server via multiple protocols with high privileges, resulting in a potential DOS attack by crashing the server.

Affected Systems and Versions

The affected versions include MySQL Server 5.6.50 and prior, 5.7.32 and prior, and 8.0.22 and prior.

Exploitation Mechanism

Attackers with high privileges and network access via various protocols can exploit this vulnerability to compromise the MySQL Server, leading to a DOS situation.

Mitigation and Prevention

This section will outline the steps to mitigate and prevent the exploitation of CVE-2021-2060.

Immediate Steps to Take

It is recommended to update the MySQL Server to the latest patched version to prevent exploitation of this vulnerability. Additionally, restricting network access to the server can help mitigate the risk.

Long-Term Security Practices

Regularly updating and patching the MySQL Server, implementing network security measures, and monitoring for any unusual server behavior can enhance long-term security.

Patching and Updates

Staying informed about security patches released by Oracle Corporation for MySQL Server and promptly applying them is crucial in maintaining a secure server environment.