CVE-2021-2042 : Vulnerability Insights and Analysis

This article provides detailed insights into CVE-2021-2042, a vulnerability found in Oracle MySQL Server versions 8.0.21 and prior, affecting the InnoDB component. Learn about the impact, technical details, and mitigation strategies for this CVE.

Understanding CVE-2021-2042

CVE-2021-2042 is a vulnerability in the MySQL Server product of Oracle MySQL, specifically within the InnoDB component. It allows a high-privileged attacker with login credentials to compromise the MySQL Server, potentially leading to unauthorized data access.

What is CVE-2021-2042?

The vulnerability in Oracle MySQL Server versions 8.0.21 and prior enables an attacker with specific privileges to exploit the InnoDB component, granting them access to sensitive data stored in MySQL Server.

The Impact of CVE-2021-2042

Successful exploitation of CVE-2021-2042 could result in unauthorized read access to a subset of MySQL Server data. The Confidentiality impact is rated at 2.3 according to the CVSS 3.1 Base Score.

Technical Details of CVE-2021-2042

CVE-2021-2042 is characterized by its low attack complexity and vector, local attack vector, and high privileges required for exploitation. The vulnerability does not impact integrity or availability.

Vulnerability Description

The vulnerability stems from the InnoDB component of Oracle MySQL Server. Attackers with logon access can compromise the server, leading to unauthorized data access.

Affected Systems and Versions

Oracle MySQL Server versions 8.0.21 and earlier are susceptible to this vulnerability within the InnoDB component.

Exploitation Mechanism

Exploiting CVE-2021-2042 requires a high-privileged attacker with logon access to the infrastructure running MySQL Server.

Mitigation and Prevention

To address CVE-2021-2042, immediate actions and long-term security practices are essential to safeguard systems running Oracle MySQL Server.

Immediate Steps to Take

System administrators should monitor security alerts from Oracle, apply relevant patches, and restrict access to high-privileged accounts in MySQL Server.

Long-Term Security Practices

Regularly update MySQL Server to the latest secure versions, implement strong access controls, and conduct security audits to detect and mitigate vulnerabilities.

Patching and Updates

Ensure timely application of security patches released by Oracle to address the CVE-2021-2042 vulnerability and enhance the overall security posture of MySQL Server.