CVE-2018-2846 Explained : Impact and Mitigation

Oracle MySQL Server component, specifically in the Performance Schema subcomponent, has a security weakness affecting versions before 5.7.21.

Understanding CVE-2018-2846

This CVE involves a vulnerability in Oracle MySQL's MySQL Server component, impacting versions prior to 5.7.21.

What is CVE-2018-2846?

The vulnerability allows a highly privileged attacker with network access to compromise the MySQL Server, potentially leading to a denial-of-service situation.

The Impact of CVE-2018-2846

Severity: CVSS 3.0 Base Score of 4.9, primarily affecting availability.
Exploitation: Unauthorized actions like causing the server to hang or crash, resulting in denial of service.

Technical Details of CVE-2018-2846

Oracle MySQL Server vulnerability details and affected systems.

Vulnerability Description

Vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Performance Schema subcomponent.
Easily exploitable by a highly privileged attacker with network access through various protocols.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Versions Affected: 5.7.21 and prior

Exploitation Mechanism

Successful exploitation can allow unauthorized actions, causing the server to hang or crash, leading to a denial-of-service situation.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2018-2846 vulnerability.

Immediate Steps to Take

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

Long-Term Security Practices

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

Patching and Updates

Stay informed about security advisories from Oracle Corporation.
Apply patches promptly to address known vulnerabilities.