CVE-2020-0904 : Exploit Details and Defense Strategies
Discover the impact of CVE-2020-0904, a Microsoft Hyper-V Denial of Service vulnerability affecting various Windows versions. Learn about affected systems, exploitation, and mitigation steps.
A denial of service vulnerability in Microsoft Hyper-V impacting various Windows versions.
Understanding CVE-2020-0904
What is CVE-2020-0904?
A vulnerability in Microsoft Hyper-V allows a guest operating system user to cause denial of service on the host server.
The Impact of CVE-2020-0904
- The vulnerability could be exploited by an attacker with privileged access on a guest OS.
- It can lead to a denial of service on the host server.
Technical Details of CVE-2020-0904
Vulnerability Description
The vulnerability arises due to the improper validation of data by Hyper-V from a guest OS user.
Affected Systems and Versions
- Windows 10 Version 1803, 1809, 1909
- Windows Server 2019, 2016
- Windows 10 Version 1607, 1709, 1903, and 2004
Exploitation Mechanism
To exploit, an attacker with guest OS privileged access executes a crafted application.
Mitigation and Prevention
Immediate Steps to Take
- Apply the provided security update promptly.
- Monitor for any unauthorized access on guest operating systems.
Long-Term Security Practices
- Enforce the principle of least privilege for user accounts.
- Regularly update and patch all software systems.
Patching and Updates
Microsoft has released a security update addressing the vulnerability for affected versions.