CVE-2018-2665 : What You Need to Know

A vulnerability in Oracle MySQL Server's Optimizer component could allow a low privileged attacker to compromise the server, potentially leading to a denial of service. The affected versions include MySQL Server 5.5.58 and earlier, 5.6.38 and earlier, and 5.7.20 and earlier.

Understanding CVE-2018-2665

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

What is CVE-2018-2665?

The vulnerability in the MySQL Server's Optimizer component allows a low privileged attacker with network access to compromise the server, potentially causing a denial of service.

The Impact of CVE-2018-2665

Exploiting this vulnerability successfully could result in unauthorized actions causing the MySQL Server to crash repeatedly or hang, leading to a complete denial of service. The CVSS 3.0 Base Score for this vulnerability is 6.5, specifically affecting availability.

Technical Details of CVE-2018-2665

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability allows a low privileged attacker with network access to compromise the MySQL Server, potentially leading to 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

The vulnerability can be exploited by a low privileged attacker with network access through various protocols, potentially compromising the MySQL Server.

Mitigation and Prevention

Protecting systems from CVE-2018-2665 is crucial to prevent potential attacks.

Immediate Steps to Take

Apply security patches provided by Oracle Corporation promptly.
Monitor network traffic for any suspicious activity.
Restrict network access to the MySQL Server to authorized users only.

Long-Term Security Practices

Regularly update and patch MySQL Server to address known vulnerabilities.
Implement network segmentation to limit the exposure of critical servers.
Conduct regular security audits and penetration testing to identify and address security weaknesses.

Patching and Updates

Ensure that the MySQL Server is updated with the latest security patches and updates to mitigate the vulnerability effectively.