CVE-2020-0890 : What You Need to Know

A denial of service vulnerability in Windows Hyper-V allows attackers to exploit specific malicious data, affecting various Microsoft operating systems.

Understanding CVE-2020-0890

What is CVE-2020-0890?

A denial of service flaw in Microsoft Hyper-V occurs due to inadequate validation of suspicious data from a guest OS user, potentially leading to system failure.

The Impact of CVE-2020-0890

The vulnerability allows a user with elevated privileges on a guest OS to launch a malicious application, potentially causing a denial of service attack.

Technical Details of CVE-2020-0890

Vulnerability Description

The security flaw in Hyper-V results from inadequate handling of malicious requests from a guest OS user, leading to a denial of service issue.

Affected Systems and Versions

Windows 10 Version 1803, 1809, 1903, 1909, 2004
Windows Server 2019, version 1903, 1909, 2004

Exploitation Mechanism

To exploit the vulnerability, an attacker with privileged access on a guest OS can execute a specially crafted application, triggering a denial of service.

Mitigation and Prevention

Immediate Steps to Take

Apply the security update provided by Microsoft to patch the vulnerability.
Monitor systems for any suspicious activity that could indicate an ongoing exploit attempt.

Long-Term Security Practices

Restrict guest OS access to only trusted users with minimum required privileges.
Regularly update and patch all software to mitigate potential security risks.

Patching and Updates

Install the security update released by Microsoft to address the vulnerability and enhance system security.