CVE-2021-2178 : Security Advisory and Response
Uncover the details of CVE-2021-2178, a vulnerability impacting MySQL Server. Learn about the exploit, impact, affected versions, and mitigation steps for Oracle software users.
A vulnerability has been identified in Oracle MySQL Server, affecting versions 5.7.32 and prior, as well as 8.0.22 and prior. This vulnerability can be exploited by a low-privileged attacker to compromise the MySQL Server, potentially leading to a denial of service (DOS) attack.
Understanding CVE-2021-2178
This section provides detailed insights into the nature and impact of the CVE-2021-2178 vulnerability.
What is CVE-2021-2178?
The vulnerability in the MySQL Server product of Oracle MySQL, specifically in the Server Replication component, allows an attacker with network access to compromise the server. Successful exploitation can lead to the unauthorized ability to hang or crash the MySQL Server.
The Impact of CVE-2021-2178
This vulnerability, scored at 6.5 on the CVSS scale, with a high availability impact, poses a medium severity threat. Attackers with low privileges can disrupt the MySQL Server's availability, potentially causing a complete DOS.
Technical Details of CVE-2021-2178
Explore the technical aspects and implications of CVE-2021-2178 in this section.
Vulnerability Description
The vulnerability permits a low-privileged attacker to exploit the MySQL Server via multiple protocols, resulting in a DOS situation by crashing the server.
Affected Systems and Versions
Oracle MySQL Server versions 5.7.32 and earlier, along with versions 8.0.22 and earlier, are susceptible to this vulnerability.
Exploitation Mechanism
Attackers can compromise the MySQL Server by leveraging network access and exploiting the replication component, leading to unauthorized server crashes.
Mitigation and Prevention
Discover the steps to mitigate the risk associated with CVE-2021-2178 in this section.
Immediate Steps to Take
Apply security patches provided by Oracle to address and remediate the vulnerability. Monitor network traffic for any suspicious activity.
Long-Term Security Practices
Implement strict access control policies, regularly update software and apply security best practices to safeguard against similar vulnerabilities.
Patching and Updates
Stay informed about security updates from Oracle and promptly apply patches to eliminate known vulnerabilities.