CVE-2018-2818 : Security Advisory and Response

Oracle MySQL Server versions 5.5.59 and prior, 5.6.39 and prior, and 5.7.21 and prior are affected by a vulnerability within the Server : Security : Privileges subcomponent. This vulnerability allows a highly privileged attacker with network access to compromise the MySQL Server, potentially leading to a denial of service.

Understanding CVE-2018-2818

This CVE involves a vulnerability in Oracle MySQL Server that can be exploited by attackers with network access, impacting the server's availability.

What is CVE-2018-2818?

The vulnerability in MySQL Server allows attackers to compromise the server, potentially causing repeated crashes or hangs, resulting in a denial of service. The CVSS 3.0 Base Score for this vulnerability is 4.9, with availability being the main impact.

The Impact of CVE-2018-2818

Highly privileged attackers with network access can exploit the vulnerability
Unauthorized ability to cause the server to hang or crash, leading to a denial of service

Technical Details of CVE-2018-2818

Oracle MySQL Server is affected by a vulnerability that can be exploited by attackers with network access.

Vulnerability Description

The vulnerability in the Server : Security : Privileges subcomponent of MySQL Server allows attackers to compromise the server, impacting its availability.

Affected Systems and Versions

MySQL Server 5.5.59 and earlier
MySQL Server 5.6.39 and earlier
MySQL Server 5.7.21 and earlier

Exploitation Mechanism

Attackers with high privileges and network access can exploit the vulnerability to compromise the MySQL Server, potentially causing a denial of service.

Mitigation and Prevention

To address CVE-2018-2818, follow these steps:

Immediate Steps to Take

Apply security patches provided by Oracle
Monitor network traffic for any suspicious activity
Restrict network access to the MySQL Server

Long-Term Security Practices

Regularly update MySQL Server to the latest version
Implement network segmentation to limit access to critical servers
Conduct regular security audits and penetration testing

Patching and Updates

Oracle has released security patches to address this vulnerability
Stay informed about security advisories and updates from Oracle