CVE-2020-17103 : Security Advisory and Response

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability was published by Microsoft on December 8, 2020.

Understanding CVE-2020-17103

This CVE identifies an Elevation of Privilege vulnerability in Windows Cloud Files Mini Filter Driver.

What is CVE-2020-17103?

The vulnerability allows attackers to elevate privileges on the affected systems, potentially leading to unauthorized actions.

The Impact of CVE-2020-17103

The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.0.

Technical Details of CVE-2020-17103

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in the Windows Cloud Files Mini Filter Driver, enabling privilege escalation.

Affected Systems and Versions

Windows 10 Version 20H2 (ARM64-based Systems, 32-bit Systems)
Windows Server version 20H2 (x64-based Systems)
Windows 10 Version 1803 (32-bit Systems, x64-based Systems, ARM64-based Systems)
Windows 10 Version 1809 (32-bit Systems, x64-based Systems, ARM64-based Systems)
Windows Server 2019 (x64-based Systems)
Windows Server 2019 (Server Core installation) (x64-based Systems)
Windows 10 Version 1909 (32-bit Systems, x64-based Systems, ARM64-based Systems)
Windows Server, version 1909 (Server Core installation) (x64-based Systems)
Windows 10 Version 1903 for 32-bit Systems (Unknown)
Windows 10 Version 1903 for x64-based Systems (Unknown)
Windows 10 Version 1903 for ARM64-based Systems (Unknown)
Windows Server, version 1903 (Server Core installation) (x64-based Systems)
Windows 10 Version 2004 (32-bit Systems, ARM64-based Systems, x64-based Systems)
Windows Server version 2004 (x64-based Systems)

Exploitation Mechanism

The vulnerability can be exploited by attackers to gain elevated privileges on the affected systems.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-17103 vulnerability.

Immediate Steps to Take

Apply the necessary security updates provided by Microsoft.
Monitor for any unauthorized access or unusual activities on the systems.

Long-Term Security Practices

Regularly update and patch systems to prevent vulnerabilities.
Implement least privilege access controls to limit potential damage.

Patching and Updates

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