CVE-2021-41377 : Vulnerability Insights and Analysis
Discover the details of CVE-2021-41377 impacting various Windows versions. Learn about the severity, affected systems, and mitigation steps against this elevation of privilege vulnerability.
Windows Fast FAT File System Driver Elevation of Privilege Vulnerability discovered on 2021-11-09.
Understanding CVE-2021-41377
What is CVE-2021-41377?
The CVE-2021-41377 is an elevation of privilege vulnerability related to the Windows Fast FAT File System Driver.
The Impact of CVE-2021-41377
This vulnerability has a CVSS base score of 7.8, indicating a high severity level. It can allow attackers to escalate their privileges on affected systems.
Technical Details of CVE-2021-41377
Vulnerability Description
The vulnerability resides in the Fast FAT File System Driver in Windows.
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
- Windows 10 Version 1507
- Windows 10 Version 1607
- Windows Server 2016
- Windows Server 2016 (Server Core installation)
- Windows 7
- Windows 7 Service Pack 1
- Windows 8.1
- Windows Server 2008 Service Pack 2
- Windows Server 2008 Service Pack 2 (Server Core installation)
- Windows Server 2008 Service Pack 2
- Windows Server 2008 R2 Service Pack 1
- Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- Windows Server 2012
- Windows Server 2012 (Server Core installation)
- Windows Server 2012 R2
- Windows Server 2012 R2 (Server Core installation)
Exploitation Mechanism
The vulnerability can be exploited by an attacker to gain elevated privileges on the affected Windows systems.
Mitigation and Prevention
Immediate Steps to Take
- Apply the security updates provided by Microsoft for the affected systems.
- Monitor for any signs of unauthorized access or malicious activities.
- Implement the principle of least privilege to restrict user access rights.
Long-Term Security Practices
- Keep all systems and software up to date with the latest security patches.
- Conduct regular security audits and penetration testing.
- Educate users about the risks of phishing and social engineering attacks.
Patching and Updates
It is crucial to apply the security patches released by Microsoft to address the vulnerability and enhance the security of the affected systems.