CVE-2021-2437 : Vulnerability Insights and Analysis

This article provides details about CVE-2021-2437, a vulnerability in Oracle MySQL Server version 8.0.25 and prior affecting the Optimizer component.

Understanding CVE-2021-2437

This section covers the impact, technical details, and mitigation strategies related to CVE-2021-2437.

What is CVE-2021-2437?

The vulnerability in Oracle MySQL Server (component: Server: Optimizer) allows a high privileged attacker with network access to compromise the server. It leads to unauthorized actions, including causing a hang or crash of the server.

The Impact of CVE-2021-2437

Successful exploitation of this vulnerability results in denial of service (DoS) attacks on MySQL Server, with a CVSS 3.1 Base Score of 4.9 (Availability impacts).

Technical Details of CVE-2021-2437

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The flaw in MySQL Server (8.0.25 and prior) allows attackers with network access to disrupt server operations, potentially leading to crashes or hangs.

Affected Systems and Versions

Oracle MySQL Server versions 8.0.25 and prior are impacted by this vulnerability.

Exploitation Mechanism

Highly privileged attackers leveraging multiple protocols can exploit this vulnerability to compromise the MySQL Server.

Mitigation and Prevention

This section outlines the steps to mitigate the risks associated with CVE-2021-2437.

Immediate Steps to Take

Ensure network security measures are in place to limit access to MySQL Server. Consider applying patches or workarounds provided by Oracle.

Long-Term Security Practices

Regularly monitor and update MySQL Server to address security vulnerabilities promptly. Educate users on safe practices to mitigate the risk of exploitation.

Patching and Updates

Stay informed about security updates and patches released by Oracle. Promptly apply these updates to secure MySQL Server from potential threats.