CVE-2021-2230 : What You Need to Know

This article provides an overview of CVE-2021-2230, a vulnerability in the MySQL Server product of Oracle MySQL that affects versions 8.0.23 and prior.

Understanding CVE-2021-2230

CVE-2021-2230 is a vulnerability in the Oracle MySQL Server, specifically in the Server Optimizer component. This vulnerability affects versions 8.0.23 and prior, exposing a critical risk to the MySQL Server.

What is CVE-2021-2230?

The vulnerability in the MySQL Server allows a high-privileged attacker with network access to compromise the server. Successful exploitation could lead to unauthorized actions causing the server to crash or hang, resulting in a denial of service (DOS) attack. The CVSS 3.1 Base Score for this vulnerability is 4.9, with high availability impacts.

The Impact of CVE-2021-2230

The impact of CVE-2021-2230 is significant, as it allows attackers to execute unauthorized actions on the MySQL Server, potentially leading to crashes or denial of service attacks. The severity of this vulnerability is rated as medium, compromising the availability of the server and putting data at risk.

Technical Details of CVE-2021-2230

This section provides more technical insights into the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) allows high-privileged attackers with network access to compromise the server, leading to crashes and denial of service attacks.

Affected Systems and Versions

The vulnerability impacts Oracle Corporation's MySQL Server versions 8.0.23 and earlier, leaving them susceptible to exploitation by attackers with network access.

Exploitation Mechanism

The vulnerability can be exploited by high-privileged attackers who have network access via multiple protocols. By leveraging this vulnerability, attackers can compromise the MySQL server and cause critical disruptions.

Mitigation and Prevention

To protect systems from CVE-2021-2230, users are advised to take immediate action and implement long-term security practices to prevent such vulnerabilities from being exploited.

Immediate Steps to Take

Immediate steps to mitigate the risk include applying the necessary patches and updates provided by Oracle Corporation to address the vulnerability in MySQL Server.

Long-Term Security Practices

Implementing secure network configurations, restricting high privileges, and monitoring network traffic can help prevent unauthorized access and potential attacks on MySQL Server.

Patching and Updates

Regularly updating MySQL Server to the latest secure version is crucial to prevent vulnerabilities and ensure the protection of critical data.