CVE-2021-2169 : Exploit Details and Defense Strategies

A detailed overview of CVE-2021-2169, a vulnerability in the MySQL Server product of Oracle MySQL, affecting versions 5.7.33 and prior and 8.0.23 and prior.

Understanding CVE-2021-2169

This section provides insights into the nature and impact of the CVE-2021-2169 vulnerability.

What is CVE-2021-2169?

The vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) allows a high privileged attacker with network access to compromise the server, resulting in unauthorized ability to cause a hang or frequently repeatable crash.

The Impact of CVE-2021-2169

Successful exploitation of the vulnerability can lead to the complete denial of service (DOS) of the MySQL Server. The CVSS 3.1 Base Score is 4.9, indicating medium severity with high availability impacts.

Technical Details of CVE-2021-2169

Explore the specific technical details related to CVE-2021-2169.

Vulnerability Description

The vulnerability in Oracle MySQL Server enables high privileged attackers to compromise the system, causing a DOS condition by repeatedly crashing the server.

Affected Systems and Versions

Versions 5.7.33 and prior, as well as 8.0.23 and prior, of the MySQL Server product from Oracle Corporation are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by an attacker with network access via multiple protocols to compromise the MySQL Server, resulting in a complete denial of service.

Mitigation and Prevention

Learn about the measures to mitigate the impact and prevent further exploitation of CVE-2021-2169.

Immediate Steps to Take

Immediately apply security patches and updates provided by Oracle to address the vulnerability and prevent exploitation.

Long-Term Security Practices

Implement strong network security measures, restrict access to the MySQL Server, and regularly update and patch the server to mitigate future vulnerabilities.

Patching and Updates

Regularly check for security advisories from Oracle and apply recommended patches and updates to ensure the MySQL Server is protected against known vulnerabilities.