CVE-2021-2166 Explained : Impact and Mitigation
Discover the details of CVE-2021-2166, a vulnerability in the MySQL Server product of Oracle MySQL, allowing unauthorized access and potential server crashes. Learn about impacted systems, exploitation, and mitigation steps.
CVE-2021-2166 is a vulnerability found in the MySQL Server product of Oracle MySQL, specifically in the Server's DML component. This vulnerability affects versions 5.7.33 and prior as well as 8.0.23 and prior, allowing a high privileged attacker with network access to compromise the MySQL Server. Successful exploitation can lead to unauthorized actions, such as causing a system hang or a complete denial of service (DOS) of the MySQL Server with a CVSS base score of 4.9.
Understanding CVE-2021-2166
This section dives into the key aspects of CVE-2021-2166.
What is CVE-2021-2166?
The vulnerability in CVE-2021-2166 affects the MySQL Server product of Oracle MySQL, allowing a high privileged attacker with network access to compromise the server. This vulnerability can lead to a complete DOS of the MySQL Server.
The Impact of CVE-2021-2166
The impact of CVE-2021-2166 includes the unauthorized ability to cause a system hang or frequently repeatable crash of the MySQL Server, resulting in availability impacts.
Technical Details of CVE-2021-2166
Let's explore the technical details of CVE-2021-2166.
Vulnerability Description
The vulnerability in the MySQL Server product of Oracle MySQL enables attackers to exploit the server with high privileges and network access, potentially leading to a complete denial of service.
Affected Systems and Versions
Versions 5.7.33 and prior, as well as 8.0.23 and prior, of the MySQL Server product from Oracle Corporation are affected by this vulnerability.
Exploitation Mechanism
Attackers with network access and high privileges can easily exploit this vulnerability in the MySQL Server to compromise the server and cause significant disruption.
Mitigation and Prevention
Discover the essential steps to mitigate and prevent the exploitation of CVE-2021-2166.
Immediate Steps to Take
It is crucial to apply security patches promptly and restrict network access to mitigate the risk associated with CVE-2021-2166.
Long-Term Security Practices
Implement robust security measures, conduct regular security audits, and stay informed about security advisories to enhance long-term security.
Patching and Updates
Stay updated with the latest patches and security updates from Oracle Corporation to address CVE-2021-2166 effectively.