CVE-2021-2418 : Security Advisory and Response

A vulnerability in the MySQL Server product of Oracle MySQL has been identified, affecting versions 8.0.25 and prior. This vulnerability allows a high privileged attacker to compromise the MySQL Server.

Understanding CVE-2021-2418

This section will provide insights into what CVE-2021-2418 entails.

What is CVE-2021-2418?

The vulnerability in Oracle MySQL Server allows a high privileged attacker with network access to compromise the server, potentially leading to a denial of service (DOS) attack.

The Impact of CVE-2021-2418

Successful exploitation of this vulnerability can result in unauthorized access, causing a hang or frequent crashes of the MySQL Server. The CVSS 3.1 Base Score is 4.9 (Availability impacts).

Technical Details of CVE-2021-2418

Let's delve into the technical aspects of CVE-2021-2418.

Vulnerability Description

The vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) affects versions 8.0.25 and prior. It allows an attacker to compromise the server via multiple protocols.

Affected Systems and Versions

The affected systems include MySQL Server versions 8.0.25 and prior.

Exploitation Mechanism

A high privileged attacker with network access via multiple protocols can exploit this vulnerability to compromise MySQL Server.

Mitigation and Prevention

To protect your systems from CVE-2021-2418, consider the following steps.

Immediate Steps to Take

Update MySQL Server to the latest version to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Implement network segmentation to limit access to critical servers.
Regularly audit and patch your systems to prevent security vulnerabilities.

Patching and Updates

Stay informed about security updates from Oracle Corporation to patch any known vulnerabilities promptly.