CVE-2021-2387 : Vulnerability Insights and Analysis

A vulnerability has been identified in Oracle MySQL Server, specifically in the Server Optimizer component. This CVE affects versions 8.0.25 and prior, potentially allowing a high-privileged attacker to compromise the MySQL Server.

Understanding CVE-2021-2387

This section will provide comprehensive details about the vulnerability and its impact.

What is CVE-2021-2387?

The vulnerability in MySQL Server of Oracle MySQL allows attackers with network access to exploit the server, potentially leading to a denial of service (DOS) by causing it to hang or crash. The CVSS 3.1 Base Score for this vulnerability is 4.9.

The Impact of CVE-2021-2387

Successful exploitation of this vulnerability can give unauthorized access to high-privileged attackers, resulting in a complete DOS of the MySQL Server due to repeatable crashes.

Technical Details of CVE-2021-2387

This section will elaborate on the technical specifics of the vulnerability.

Vulnerability Description

The vulnerability lies in the MySQL Server product of Oracle MySQL, affecting versions 8.0.25 and earlier. Attackers with network access can compromise the server, potentially leading to DOS.

Affected Systems and Versions

The vulnerable versions include MySQL Server 8.0.25 and prior, making them susceptible to exploitation by high-privileged attackers.

Exploitation Mechanism

Attackers can exploit this vulnerability via multiple protocols with network access, allowing them to compromise the MySQL Server.

Mitigation and Prevention

This section will outline steps to mitigate and prevent exploitation of this vulnerability.

Immediate Steps to Take

Users are advised to update to a patched version of MySQL Server to prevent exploitation and ensure the security of their systems.

Long-Term Security Practices

Implementing secure network configurations and access controls can help mitigate the risk of exploitation of this vulnerability.

Patching and Updates

Regularly monitoring for security updates and applying patches promptly is crucial in maintaining the security of MySQL Server.