CVE-2021-2202 : Vulnerability Insights and Analysis

A vulnerability has been identified in the MySQL Server product of Oracle MySQL, particularly affecting versions 5.7.32 and prior, as well as 8.0.22 and prior. This vulnerability allows a low-privileged attacker with network access to compromise the MySQL Server, potentially resulting in a denial of service (DOS) attack. Here's all you need to know about CVE-2021-2202:

Understanding CVE-2021-2202

This section provides detailed insights into the nature of the CVE-2021-2202 vulnerability.

What is CVE-2021-2202?

CVE-2021-2202 is a vulnerability in the MySQL Server product of Oracle MySQL, specifically in the Server Replication component. The affected versions include 5.7.32 and earlier, as well as 8.0.22 and prior. The vulnerability can be easily exploited by a low-privileged attacker with network access via multiple protocols to compromise the MySQL Server. Successful exploitation of this vulnerability can lead to unauthorized actions, such as causing the server to hang or crash repeatedly, resulting in a complete denial of service.

The Impact of CVE-2021-2202

The impact of this vulnerability is categorized with a CVSS 3.1 Base Score of 6.5, with a focus on availability impacts. The CVSS vector for this vulnerability indicates that the attack complexity is low, the attack vector is via the network, and the availability impact is high. The base severity is rated as MEDIUM, with no confidentiality or integrity impacts, and low privileges required for exploitation.

Technical Details of CVE-2021-2202

This section provides the technical details and specifics related to CVE-2021-2202.

Vulnerability Description

The vulnerability allows a low-privileged attacker with network access to compromise the MySQL Server, potentially leading to a denial of service (DOS) attack by causing the server to hang or crash.

Affected Systems and Versions

The affected systems include MySQL Server versions 5.7.32 and earlier, as well as 8.0.22 and prior.

Exploitation Mechanism

The vulnerability can be easily exploited by a low-privileged attacker with network access via multiple protocols to compromise the MySQL Server.

Mitigation and Prevention

This section outlines the necessary steps to mitigate and prevent the exploitation of CVE-2021-2202.

Immediate Steps to Take

Users and administrators should take immediate action to patch and secure their MySQL Server installations to prevent exploitation of this vulnerability.

Long-Term Security Practices

Implementing robust security measures, network segmentation, and regular security updates are essential for long-term protection against vulnerabilities like CVE-2021-2202.

Patching and Updates

Regularly monitor for security updates from Oracle and apply patches promptly to address known vulnerabilities and enhance system security.