CVE-2021-2357 : Vulnerability Insights and Analysis
Learn about CVE-2021-2357, a vulnerability in Oracle MySQL Server versions before 8.0.25, allowing high-privileged attackers to compromise the server, leading to a denial of service attack.
This article provides insights into CVE-2021-2357, a vulnerability found in Oracle MySQL Server versions 8.0.25 and prior.
Understanding CVE-2021-2357
CVE-2021-2357 is a vulnerability in MySQL Server that can be exploited by a high-privileged attacker with network access to compromise the server. The vulnerability can lead to a denial of service (DOS) attack.
What is CVE-2021-2357?
The vulnerability in MySQL Server allows attackers with network access to cause a hang or crash the server, resulting in a complete denial of service. It is rated with a CVSS 3.1 Base Score of 4.9 (Availability impacts).
The Impact of CVE-2021-2357
Successful exploitation of CVE-2021-2357 can grant unauthorized individuals the ability to disrupt MySQL Server's normal operation, leading to severe availability issues.
Technical Details of CVE-2021-2357
The vulnerability is found in the Oracle MySQL Server, specifically in the Server Optimizer component. Affected versions include 8.0.25 and prior.
Vulnerability Description
The vulnerability in MySQL Server enables high-privileged attackers to compromise the server through network access, potentially causing a hang or crash.
Affected Systems and Versions
The vulnerability impacts Oracle MySQL Server versions 8.0.25 and earlier.
Exploitation Mechanism
Attackers can exploit this vulnerability via multiple protocols, allowing them to compromise the MySQL Server.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2021-2357.
Immediate Steps to Take
Users should apply security patches provided by Oracle to mitigate the vulnerability and prevent potential attacks.
Long-Term Security Practices
Regularly updating MySQL Server to the latest secure version and implementing robust network security measures can help prevent future vulnerabilities.
Patching and Updates
Stay informed about security advisories related to Oracle MySQL Server and promptly apply patches and updates to ensure the security of your server.