CVE-2021-35631 Explained : Impact and Mitigation

A vulnerability has been identified in the MySQL Server product of Oracle MySQL, specifically affecting versions 8.0.26 and prior. This vulnerability could be exploited by a high privileged attacker to compromise MySQL Server.

Understanding CVE-2021-35631

This section will explore the details of the CVE-2021-35631 vulnerability, its impacts, technical details, and mitigation strategies.

What is CVE-2021-35631?

The vulnerability in the MySQL Server product of Oracle MySQL allows a high privileged attacker with network access to compromise the server. Successful exploitation could lead to a complete denial of service (DOS) affecting the availability of MySQL Server.

The Impact of CVE-2021-35631

Attacks exploiting this vulnerability could result in unauthorized individuals causing a hang or frequently repeatable crash of the MySQL Server, impacting its availability. The CVSS 3.1 Base Score for this vulnerability is 4.9, indicating a medium severity level.

Technical Details of CVE-2021-35631

Let's delve deeper into the technical aspects of the CVE-2021-35631 vulnerability including its description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability allows easy exploitation by high privileged attackers with network access, enabling them to compromise the MySQL Server. Successful attacks could cause a complete DOS situation.

Affected Systems and Versions

The vulnerability impacts Oracle MySQL Server versions 8.0.26 and prior.

Exploitation Mechanism

High privileged attackers with network access can exploit this vulnerability via multiple protocols, compromising the MySQL Server's integrity and availability.

Mitigation and Prevention

In this section, we will discuss the steps you can take to mitigate the risks posed by CVE-2021-35631 and prevent potential exploitation.

Immediate Steps to Take

Immediate actions include limiting network exposure for all database servers, ensuring only trusted users have network access, and regularly monitoring MySQL Server for any suspicious activities.

Long-Term Security Practices

Implementing strict network segmentation, keeping systems up to date with the latest security patches, and conducting regular security audits are essential for long-term security.

Patching and Updates

Ensure timely patches and updates are applied to the MySQL Server to address this vulnerability and strengthen the overall security posture.