CVE-2021-35643 : Security Advisory and Response

A vulnerability has been identified in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. This vulnerability affects versions 8.0.26 and prior, potentially enabling a high-privileged attacker to compromise the MySQL Server.

Understanding CVE-2021-35643

This section delves into the details of CVE-2021-35643 to provide a clear understanding of the issue.

What is CVE-2021-35643?

The vulnerability in MySQL Server allows attackers with network access to leverage multiple protocols to compromise the server. Successful exploitation can lead to a denial of service (DOS) by causing the server to hang or crash.

The Impact of CVE-2021-35643

The impact of this vulnerability is rated as medium, with a CVSS 3.1 Base Score of 4.9. The high availability impact could result in unauthorized server manipulation.

Technical Details of CVE-2021-35643

This section explores the technical aspects of CVE-2021-35643, including how the vulnerability manifests and its implications.

Vulnerability Description

The vulnerability in the MySQL Server product of Oracle MySQL allows for an easily exploitable attack vector, potentially leading to server compromise and DOS attacks.

Affected Systems and Versions

The affected versions are specifically MySQL Server 8.0.26 and prior, making these versions susceptible to the identified vulnerability.

Exploitation Mechanism

Attackers with high network privileges can exploit this vulnerability using multiple protocols to compromise the MySQL Server.

Mitigation and Prevention

To address CVE-2021-35643, it is crucial to implement immediate steps and adopt long-term security practices to mitigate the risk effectively.

Immediate Steps to Take

Administrators should closely monitor network traffic, apply necessary security patches, and restrict network access to mitigate the risk of exploitation.

Long-Term Security Practices

In the long term, organizations should prioritize regular security audits, employee training on secure practices, and keeping software up to date to prevent similar vulnerabilities.

Patching and Updates

Regularly checking for security updates and promptly applying patches provided by Oracle Corporation is essential to protect systems from potential threats.