CVE-2018-2668 : Security Advisory and Response

A security flaw has been discovered in the MySQL Server component of Oracle MySQL, specifically in the Server Optimizer subcomponent. The vulnerability affects versions 5.5.58 and earlier, 5.6.38 and earlier, and 5.7.20 and earlier, allowing attackers with low privileges and network access to compromise the MySQL Server, potentially leading to denial of service.

Understanding CVE-2018-2668

This CVE pertains to a vulnerability in the MySQL Server component of Oracle MySQL, impacting various versions.

What is CVE-2018-2668?

The vulnerability in the MySQL Server component of Oracle MySQL allows attackers with low privileges and network access to compromise the server, potentially causing denial of service.

The Impact of CVE-2018-2668

The vulnerability, with a CVSS 3.0 Base Score of 6.5, affects the availability of the MySQL Server. Attackers can exploit this flaw to cause the server to hang or crash, leading to a complete denial of service.

Technical Details of CVE-2018-2668

The technical aspects of the CVE-2018-2668 vulnerability are as follows:

Vulnerability Description

The vulnerability allows low-privileged attackers with network access to compromise the MySQL Server, potentially causing a denial of service.

Affected Systems and Versions

MySQL Server 5.5.58 and prior
MySQL Server 5.6.38 and prior
MySQL Server 5.7.20 and prior

Exploitation Mechanism

Attackers with low privileges and network access can exploit the vulnerability through multiple protocols to compromise the MySQL Server.

Mitigation and Prevention

To address CVE-2018-2668, consider the following mitigation strategies:

Immediate Steps to Take

Apply security patches provided by Oracle Corporation.
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 strong access controls and authentication mechanisms.
Conduct regular security assessments and audits.

Patching and Updates

Ensure timely installation of security patches released by Oracle Corporation to address the vulnerability.