CVE-2019-2681 Explained : Impact and Mitigation

Oracle MySQL Server component has a vulnerability affecting versions 8.0.15 and earlier, allowing a highly privileged attacker to cause a denial of service (DOS) situation.

Understanding CVE-2019-2681

The vulnerability in the Oracle MySQL Server component impacts the availability of the server, potentially leading to frequent crashes or hangs.

What is CVE-2019-2681?

The Oracle MySQL Server vulnerability allows a highly privileged attacker with network access to exploit the Optimizer subcomponent, affecting versions 8.0.15 and prior. Successful exploitation can result in a denial of service situation.

The Impact of CVE-2019-2681

Unauthorized individuals can cause the server to hang or crash frequently, leading to a denial of service (DOS) situation.
The severity of this vulnerability is assessed with a CVSS 3.0 Base Score of 4.9, specifically impacting the availability of the server.

Technical Details of CVE-2019-2681

The technical details of the CVE-2019-2681 vulnerability are as follows:

Vulnerability Description

The vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer) affects versions 8.0.15 and earlier.

Affected Systems and Versions

Product: MySQL Server
Vendor: Oracle Corporation
Versions Affected: 8.0.15 and prior

Exploitation Mechanism

Highly privileged attackers with network access can compromise MySQL Server through multiple protocols, potentially causing a hang or crash.

Mitigation and Prevention

To address CVE-2019-2681, consider the following mitigation strategies:

Immediate Steps to Take

Apply vendor patches promptly.
Monitor network traffic for signs of exploitation.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch MySQL Server.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and updates from Oracle Corporation and other relevant vendors.