CVE-2021-1691 Explained : Impact and Mitigation
Learn about CVE-2021-1691 impacting Windows Server and Windows 10. Discover the technical details, impact, affected systems, and mitigation steps for this Denial of Service Vulnerability.
Windows Hyper-V Denial of Service Vulnerability was published by Microsoft on January 12, 2021. It impacts various versions of Windows Server and Windows 10.
Understanding CVE-2021-1691
This section will provide insights into the nature and impact of the Windows Hyper-V Denial of Service Vulnerability.
What is CVE-2021-1691?
CVE-2021-1691 is a Denial of Service vulnerability affecting Windows Server versions 20H2, 1909, 2004 and Windows 10 versions 1909, 2004. It can be exploited to cause a DoS condition on the affected systems.
The Impact of CVE-2021-1691
The vulnerability can be exploited by a remote attacker to disrupt services and cause a denial of service on the affected Windows systems, potentially leading to system unavailability.
Technical Details of CVE-2021-1691
In this section, detailed technical aspects of the vulnerability will be discussed.
Vulnerability Description
The CVE-2021-1691 involves a flaw in Windows Hyper-V that allows a remote attacker to send specially crafted requests to the target system, triggering a DoS condition.
Affected Systems and Versions
The vulnerability affects Windows Server version 20H2, Windows 10 Version 1909, Windows Server version 1909, Windows 10 Version 2004, and Windows Server version 2004 running on x64-based Systems.
Exploitation Mechanism
The vulnerability can be exploited remotely by sending malicious requests, impacting the availability of the targeted systems.
Mitigation and Prevention
In this section, measures to mitigate and prevent the exploitation of CVE-2021-1691 will be discussed.
Immediate Steps to Take
Users are advised to apply security updates provided by Microsoft to address the vulnerability and prevent exploitation. Configuration changes may be necessary to enhance system security.
Long-Term Security Practices
Regularly apply security patches, implement network security measures, and conduct security assessments to ensure the overall resilience of the systems against potential vulnerabilities.
Patching and Updates
Stay informed about security advisories from Microsoft and promptly apply patches to eliminate security risks and safeguard systems from potential threats.