CVE-2021-2081 Explained : Impact and Mitigation

MySQL Server versions 8.0.22 and prior, developed by Oracle Corporation, are prone to a vulnerability that can be exploited by a high-privileged attacker with network access. This flaw could lead to a denial-of-service (DOS) attack, causing MySQL Server to crash or hang.

Understanding CVE-2021-2081

This section provides insights into the nature of the CVE-2021-2081 vulnerability.

What is CVE-2021-2081?

The vulnerability exists in the Oracle MySQL Server's Stored Procedure component, affecting versions 8.0.22 and earlier. Exploitation by a high-privileged attacker via various protocols could compromise the integrity and availability of the MySQL Server.

The Impact of CVE-2021-2081

Successful exploitation of this vulnerability carries a medium severity with a CVSS 3.1 base score of 4.9. The primary impact is on the availability of the MySQL Server, making it susceptible to repeated crashes or causing it to hang.

Technical Details of CVE-2021-2081

Explore the technical aspects related to CVE-2021-2081.

Vulnerability Description

The vulnerability allows a high-privileged attacker to compromise MySQL Server via network access, leading to a DOS situation where the server could crash or hang, impacting availability.

Affected Systems and Versions

Oracle MySQL Server versions 8.0.22 and prior are affected by this vulnerability, potentially exposing them to exploitation.

Exploitation Mechanism

High-privileged attackers with network access can easily exploit this vulnerability through multiple protocols, compromising the MySQL Server's functionality.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the CVE-2021-2081 vulnerability.

Immediate Steps to Take

Users are advised to apply security patches provided by Oracle promptly to address the vulnerability and enhance the security of their MySQL Server installations.

Long-Term Security Practices

Implementing network security measures, access controls, and regular security updates can help in safeguarding MySQL Servers against potential exploits.

Patching and Updates

Regularly monitor security advisories from Oracle Corporation and apply patches as soon as they are released to ensure protection against known vulnerabilities.