CVE-2021-2372 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-2372, a vulnerability found in the MySQL Server product of Oracle MySQL.

Understanding CVE-2021-2372

This section discusses the vulnerability, its impact, affected systems, and how to mitigate the risks associated with it.

What is CVE-2021-2372?

The CVE-2021-2372 vulnerability affects Oracle MySQL Server versions 5.7.34 and earlier, as well as versions 8.0.25 and earlier. It is a difficult-to-exploit vulnerability that could allow a high-privileged attacker with network access to compromise the MySQL Server. Successful exploitation of this vulnerability may lead to unauthorized actions causing the server to crash or hang, resulting in a denial of service (DOS) attack.

The Impact of CVE-2021-2372

The CVSS 3.1 Base Score for CVE-2021-2372 is 4.4, indicating a medium severity vulnerability with high availability impact. The attack complexity is high, and the privileges required for exploitation are also high. The vulnerability exists in the InnoDB component of MySQL Server.

Technical Details of CVE-2021-2372

In this section, we delve into the specifics of the vulnerability, including its description, affected systems and versions, and how exploitation can occur.

Vulnerability Description

The vulnerability in MySQL Server allows a high-privileged attacker with network access to compromise the server, potentially leading to a complete denial of service attack due to crashes or hang situations.

Affected Systems and Versions

Oracle MySQL Server versions 5.7.34 and earlier, as well as versions 8.0.25 and earlier, are impacted by this vulnerability.

Exploitation Mechanism

Attackers with high privileges and network access via multiple protocols can exploit this vulnerability to compromise the MySQL Server, causing it to crash or hang and result in a denial of service.

Mitigation and Prevention

This section outlines steps to mitigate the risks associated with CVE-2021-2372 and prevent potential exploitation of the vulnerability.

Immediate Steps to Take

Users are advised to apply relevant security patches provided by Oracle to address the vulnerability in MySQL Server. Additionally, network access controls and monitoring can help prevent unauthorized access.

Long-Term Security Practices

Regularly updating and patching MySQL Server to the latest secure versions is crucial for safeguarding against vulnerabilities. Implementing secure network configurations and user privilege management are recommended security practices.

Patching and Updates

Stay informed about security updates and patches released by Oracle for MySQL Server to ensure protection against known vulnerabilities and security threats.