CVE-2021-2278 : Security Advisory and Response
Learn about CVE-2021-2278, a vulnerability in MySQL Server product of Oracle MySQL, allowing a high privileged attacker to compromise the server. Find out the impact, affected versions, and mitigation steps.
A vulnerability in the MySQL Server product of Oracle MySQL can be exploited by a high privileged attacker to compromise the server, leading to a denial of service (DOS) condition.
Understanding CVE-2021-2278
This CVE relates to a vulnerability in Oracle MySQL Server that allows a high privileged attacker with network access to compromise the server.
What is CVE-2021-2278?
The vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) affects versions 8.0.23 and prior. It permits an attacker to cause a hang or crash of the server, resulting in a denial of service (DOS) condition.
The Impact of CVE-2021-2278
Successful exploitation of this vulnerability allows unauthorized actions that can disrupt the availability of MySQL Server. The CVSS 3.1 Base Score for this vulnerability is 4.9 with high impact on availability.
Technical Details of CVE-2021-2278
This section provides a detailed overview of the vulnerability, the affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability allows a high privileged attacker with network access to compromise MySQL Server, potentially causing a hang or repeatable crash, leading to a complete DOS condition.
Affected Systems and Versions
The vulnerability impacts MySQL Server versions 8.0.23 and earlier, specifically affecting Oracle MySQL Server.
Exploitation Mechanism
The vulnerability is easily exploitable by an attacker with high privileges and network access using multiple protocols to compromise the MySQL Server.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-2278, it is crucial to take immediate steps and implement long-term security practices.
Immediate Steps to Take
Ensure that access to the MySQL Server is restricted and closely monitored. Consider implementing network security measures to limit exposure to attackers.
Long-Term Security Practices
Regularly update MySQL Server to the latest secure versions and patches. Conduct security audits and vulnerability assessments periodically to identify and address any potential weaknesses.
Patching and Updates
Stay informed about security advisories from Oracle Corporation and promptly apply patches provided to address known vulnerabilities.