CVE-2021-41378 : Security Advisory and Response

A Windows NTFS Remote Code Execution Vulnerability was disclosed by Microsoft affecting multiple Windows versions.

Understanding CVE-2021-41378

What is CVE-2021-41378?

The CVE-2021-41378 is a Remote Code Execution vulnerability in Windows NTFS file system.

The Impact of CVE-2021-41378

The vulnerability is rated as HIGH severity with a CVSS base score of 7.8, allowing attackers to execute arbitrary code remotely.

Technical Details of CVE-2021-41378

Vulnerability Description

The vulnerability allows threat actors to execute malicious code on affected systems.

Affected Systems and Versions

Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2
Platforms: 32-bit Systems, x64-based Systems, ARM64-based Systems

Exploitation Mechanism

The vulnerability can be exploited by attackers to gain unauthorized access and execute arbitrary code remotely.

Mitigation and Prevention

Immediate Steps to Take

Apply the necessary security updates provided by Microsoft promptly.
Monitor network traffic for any suspicious activity.
Implement the principle of least privilege to limit system access.

Long-Term Security Practices

Regularly update systems with the latest security patches.
Conduct regular security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply the security patches released by Microsoft to mitigate the risk associated with CVE-2021-41378.