CVE-2021-1670 : What You Need to Know

Windows Projected File System FS Filter Driver Information Disclosure Vulnerability was published by Microsoft on January 12, 2021. The vulnerability affects various versions of Windows, including Windows 10 and Windows Server.

Understanding CVE-2021-1670

This section provides an overview of the information disclosure vulnerability in the Windows Projected File System FS Filter Driver.

What is CVE-2021-1670?

The CVE-2021-1670 vulnerability is an information disclosure issue in certain versions of Windows that could allow an attacker to access sensitive data.

The Impact of CVE-2021-1670

The impact of this vulnerability is rated as MEDIUM according to the CVSS v3.1 base score of 5.5. It could lead to unauthorized access to critical information stored on affected systems.

Technical Details of CVE-2021-1670

Below are the technical details related to CVE-2021-1670:

Vulnerability Description

The vulnerability allows information disclosure through the Windows Projected File System FS Filter Driver, potentially exposing sensitive data.

Affected Systems and Versions

The following Windows versions are affected by CVE-2021-1670:

Windows 10 Version 20H2 (32-bit Systems, ARM64-based Systems)
Windows Server version 20H2 (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 exploit involves leveraging the vulnerability in the FS Filter Driver to gain unauthorized access to confidential information.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-1670, consider the following preventive measures:

Immediate Steps to Take

Keep systems updated with the latest security patches from Microsoft.
Monitor for any unauthorized access to sensitive data.

Long-Term Security Practices

Implement access controls and user permissions to limit data exposure.
Conduct regular security assessments and audits to identify vulnerabilities.

Patching and Updates

Apply security updates released by Microsoft for the affected Windows versions to address the vulnerability and enhance system security.