CVE-2021-2179 : Exploit Details and Defense Strategies
Learn about CVE-2021-2179, a vulnerability in Oracle MySQL allowing high-privileged attackers to compromise servers, potentially leading to a DOS attack. Find mitigation steps here.
This article provides an overview of CVE-2021-2179, a vulnerability in the MySQL Server product of Oracle MySQL that can lead to a denial of service (DOS) attack.
Understanding CVE-2021-2179
This section delves into the details of the vulnerability, its impact, technical aspects, and preventive measures.
What is CVE-2021-2179?
The vulnerability in MySQL Server allows a high privileged attacker with network access to compromise the server, potentially causing a DOS by repeatedly crashing the server.
The Impact of CVE-2021-2179
Successful exploitation of this vulnerability can result in unauthorized actions leading to server hangs or crashes, impacting the availability of the MySQL Server with a CVSS Base Score of 4.9.
Technical Details of CVE-2021-2179
Here we explore the specific technical details related to the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability in the MySQL Server product (component: Server: Group Replication Plugin) affects versions 5.7.33 and prior, as well as 8.0.23 and prior. It allows attackers to compromise the server, potentially causing a DOS.
Affected Systems and Versions
The affected systems include MySQL Server versions 5.7.33 and earlier, along with versions 8.0.23 and previous releases.
Exploitation Mechanism
The vulnerability can be exploited by a high privileged attacker with network access, enabling them to compromise the MySQL Server via various protocols.
Mitigation and Prevention
In this section, we discuss the steps to mitigate the risks posed by CVE-2021-2179 and prevent potential exploitation.
Immediate Steps to Take
Immediately update MySQL Server to the latest secure version and apply patches provided by Oracle to address this vulnerability.
Long-Term Security Practices
Maintain regular security updates, monitor official security advisories, and follow best practices to enhance the overall security posture of MySQL Server.
Patching and Updates
Regularly check for security patches released by Oracle for MySQL Server and promptly apply them to ensure protection against known vulnerabilities.