CVE-2021-35635 : What You Need to Know

A vulnerability has been identified in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. Attackers with network access can exploit this vulnerability in versions 8.0.26 and earlier, potentially leading to a denial of service (DOS) or unauthorized server compromise.

Understanding CVE-2021-35635

This section delves into the specifics of the CVE-2021-35635 vulnerability.

What is CVE-2021-35635?

The vulnerability in Oracle MySQL's Server Optimizer allows highly privileged attackers with network access to compromise the MySQL Server. Successful exploitation can result in a DOS situation or unauthorized server compromise.

The Impact of CVE-2021-35635

This vulnerability, with a CVSS 3.1 Base Score of 4.9, affects the availability of the MySQL Server. Attackers can trigger server hangs or crashes, leading to potential service disruptions.

Technical Details of CVE-2021-35635

In this section, we explore the technical details related to CVE-2021-35635.

Vulnerability Description

The vulnerability allows attackers with network access to compromise Oracle MySQL Server, potentially leading to DOS or unauthorized server control.

Affected Systems and Versions

Versions 8.0.26 and prior of MySQL Server are affected by this vulnerability, exposing them to exploitation.

Exploitation Mechanism

Highly privileged attackers leveraging network access can exploit this vulnerability through various protocols, compromising the MySQL Server.

Mitigation and Prevention

This section outlines the necessary steps to mitigate and prevent the exploitation of CVE-2021-35635.

Immediate Steps to Take

Immediate steps include applying security patches, monitoring network traffic for suspicious activities, and restricting network access to the MySQL Server.

Long-Term Security Practices

Implementing a robust security posture, conducting regular security assessments, and staying informed about security best practices can enhance long-term security.

Patching and Updates

Regularly updating MySQL Server to the latest secure versions and staying informed about security patches are crucial to prevent exploitation of known vulnerabilities.