CVE-2020-2921 Explained : Impact and Mitigation

A vulnerability in the MySQL Server product of Oracle MySQL allows a high privileged attacker to compromise the server, potentially leading to a denial of service (DOS) attack.

Understanding CVE-2020-2921

This CVE involves a vulnerability in the MySQL Server product of Oracle MySQL, impacting versions 8.0.19 and prior.

What is CVE-2020-2921?

The vulnerability allows a high privileged attacker with network access to compromise the MySQL Server, potentially causing a DOS attack. The CVSS 3.0 Base Score is 4.4, indicating a medium severity level.

The Impact of CVE-2020-2921

Successful exploitation can lead to unauthorized actions causing the server to hang or crash, resulting in a complete denial of service (DOS).

Technical Details of CVE-2020-2921

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the MySQL Server product of Oracle MySQL allows attackers to compromise the server, potentially leading to a DOS attack.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Affected Versions: 8.0.19 and prior

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: High
Availability Impact: High
CVSS Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Mitigation and Prevention

Protecting systems from CVE-2020-2921 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Oracle promptly.
Monitor network traffic for any suspicious activity.
Restrict network access to the MySQL Server to authorized users only.

Long-Term Security Practices

Regularly update and patch MySQL Server to address known vulnerabilities.
Implement network segmentation to limit the exposure of critical servers.

Patching and Updates

Stay informed about security updates and patches released by Oracle for MySQL Server.