CVE-2019-0711 Explained : Impact and Mitigation

A denial of service vulnerability exists in Microsoft Hyper-V, known as 'Windows Hyper-V Denial of Service Vulnerability'.

Understanding CVE-2019-0711

What is CVE-2019-0711?

The vulnerability occurs when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system.

The Impact of CVE-2019-0711

The presence of this vulnerability can lead to a denial of service attack on the affected systems.

Technical Details of CVE-2019-0711

Vulnerability Description

The vulnerability is caused by inadequate input verification by Microsoft Hyper-V on the host server.

Affected Systems and Versions

Windows: 8.1 for x64-based systems, RT 8.1, 10 for x64-based Systems, 10 Version 1607 for x64-based Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems, 10 Version 1709 for ARM64-based Systems
Windows Server: 2012 R2, 2012 R2 (Core installation), 2016, 2016 (Core installation), version 1803 (Core Installation), 2019, 2019 (Core installation)

Exploitation Mechanism

The vulnerability is exploited when a privileged user on a guest operating system provides malicious input to the Microsoft Hyper-V on the host server.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security updates from Microsoft.
Implement the principle of least privilege to restrict user access.
Monitor and restrict network traffic to the affected systems.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Ensure that all affected systems are updated with the latest security patches provided by Microsoft.