CVE-2019-0715 : What You Need to Know

A denial of service vulnerability exists in the Microsoft Hyper-V Network Switch on a host server due to inadequate validation of input from a privileged user on a guest operating system. This vulnerability is also known as 'Windows Hyper-V Denial of Service Vulnerability'.

Understanding CVE-2019-0715

This CVE ID is distinct from CVE-2019-0714, CVE-2019-0717, CVE-2019-0718, and CVE-2019-0723.

What is CVE-2019-0715?

The vulnerability in Microsoft Hyper-V Network Switch allows for a denial of service attack when input from a privileged user on a guest OS is not properly validated.

The Impact of CVE-2019-0715

The vulnerability can lead to a denial of service on the host server, potentially disrupting services and causing downtime.

Technical Details of CVE-2019-0715

Vulnerability Description

The vulnerability arises from the lack of proper input validation from a privileged user on a guest OS, affecting the Microsoft Hyper-V Network Switch.

Affected Systems and Versions

Windows 7 for x64-based Systems Service Pack 1
Windows 8.1 for x64-based systems
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 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2012
Windows Server 2012 (Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Core installation)
Windows Server 2016
Windows Server 2016 (Core installation)
Windows Server version 1803 (Core Installation)
Windows Server 2019
Windows Server 2019 (Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Core installation)
Windows 10 Version 1903 for x64-based Systems (unspecified)
Windows Server version 1903 (Server Core installation) (unspecified)

Exploitation Mechanism

The vulnerability can be exploited by sending specially crafted input from a privileged user on a guest OS to the Microsoft Hyper-V Network Switch, causing a denial of service.

Mitigation and Prevention

Immediate Steps to Take

Apply the necessary security updates provided by Microsoft.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch systems to address known vulnerabilities.
Conduct security assessments and audits to identify and mitigate risks.

Patching and Updates

Ensure that all affected systems and versions are updated with the latest security patches from Microsoft.