CVE-2021-2070 : What You Need to Know
Discover the details of CVE-2021-2070, a vulnerability in MySQL Server that allows attackers to compromise the server, causing denial of service. Learn about impacts, affected versions, and mitigation steps.
A vulnerability has been identified in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. This vulnerability, tracked as CVE-2021-2070, affects versions 8.0.22 and prior. An attacker with network access can exploit this vulnerability to compromise the MySQL Server, leading to a denial of service condition. Here is all you need to know about CVE-2021-2070.
Understanding CVE-2021-2070
This section delves into the specifics of CVE-2021-2070.
What is CVE-2021-2070?
CVE-2021-2070 is a vulnerability in the MySQL Server product of Oracle MySQL that allows a high privileged attacker with network access to compromise the server, potentially resulting in a complete denial of service by causing a hang or frequent crash of the MySQL Server.
The Impact of CVE-2021-2070
The impact of this vulnerability is rated with a CVSS 3.1 base score of 4.9, indicating a medium severity vulnerability with high availability impact. Attackers can exploit this vulnerability via multiple protocols, leading to unauthorized actions that disrupt the MySQL Server.
Technical Details of CVE-2021-2070
Let's explore the technical details of CVE-2021-2070.
Vulnerability Description
The vulnerability resides in the Server Optimizer component of MySQL Server, affecting versions 8.0.22 and prior. It is easily exploitable by a high privileged attacker with network access.
Affected Systems and Versions
The vulnerability impacts MySQL Server versions 8.0.22 and prior, leaving them exposed to potential exploitation.
Exploitation Mechanism
Attackers with network access can exploit this vulnerability through various protocols to compromise the MySQL Server, causing a denial of service condition.
Mitigation and Prevention
This section outlines steps to mitigate and prevent exploitation of CVE-2021-2070.
Immediate Steps to Take
Users are advised to apply security patches as soon as they are available from Oracle to address this vulnerability. Additionally, network security measures should be implemented to restrict unauthorized access.
Long-Term Security Practices
Regularly updating MySQL Server to the latest versions and following security best practices are essential to prevent exploitation of known vulnerabilities.
Patching and Updates
Ensure prompt application of patches and updates released by Oracle to mitigate the risk posed by CVE-2021-2070.