CVE-2019-0695 : What You Need to Know

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

Understanding CVE-2019-0695

What is CVE-2019-0695?

This vulnerability occurs when Microsoft Hyper-V fails to validate input from a privileged user on a guest operating system, potentially leading to a denial of service.

The Impact of CVE-2019-0695

This vulnerability can be exploited by a privileged user on a guest OS to cause a denial of service on the host server running Microsoft Hyper-V.

Technical Details of CVE-2019-0695

Vulnerability Description

The vulnerability arises from a failure in input validation by Microsoft Hyper-V on the host server.

Affected Systems and Versions

Windows 10 for x64-based Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1703 for x64-based Systems
Windows 10 Version 1709 for x64-based Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2016
Windows Server 2016 (Core installation)
Windows Server version 1709 (Core Installation)
Windows Server version 1803 (Core Installation)
Windows Server 2019
Windows Server 2019 (Core installation)

Exploitation Mechanism

The vulnerability can be exploited by a privileged user on a guest OS to send malicious input to the host server, triggering a denial of service.

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 prevent unauthorized access.

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

Microsoft has released patches addressing this vulnerability. Ensure all affected systems are updated with the latest security fixes.