CVE-2021-2048 : Security Advisory and Response

A vulnerability has been identified in MySQL Server product of Oracle MySQL, specifically in the InnoDB component. The affected versions are 8.0.22 and prior, potentially allowing a high privileged attacker to compromise the server.

Understanding CVE-2021-2048

This section will cover what CVE-2021-2048 is, its impact, technical details, and mitigation strategies.

What is CVE-2021-2048?

The vulnerability in MySQL Server product of Oracle MySQL allows a high privileged attacker to compromise the server by exploiting its InnoDB component. This could result in unauthorized data access and server compromise.

The Impact of CVE-2021-2048

The vulnerability poses a medium level threat with a CVSS 3.1 Base Score of 5.0. An attacker could cause a complete denial of service (DOS) by crashing the server or gain unauthorized access to server data.

Technical Details of CVE-2021-2048

Let's dive into the specifics of this vulnerability.

Vulnerability Description

The flaw allows a high privileged attacker with network access to compromise MySQL Server, potentially leading to unauthorized data access and server crashes.

Affected Systems and Versions

The identified affected versions are MySQL Server 8.0.22 and earlier.

Exploitation Mechanism

Successful exploitation of this vulnerability could allow an attacker to cause a DOS attack by crashing the server or gaining unauthorized access to sensitive data.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-2048.

Immediate Steps to Take

It is recommended to update MySQL Server to a non-vulnerable version immediately. Implement network security measures to restrict high privileged access to the server.

Long-Term Security Practices

Regularly monitor for security updates and patches for MySQL Server. Conduct security trainings for personnel to prevent unauthorized access.

Patching and Updates

Apply any available security patches for MySQL Server promptly to mitigate the risks associated with CVE-2021-2048.