CVE-2020-0841 Explained : Impact and Mitigation
Learn about CVE-2020-0841, an elevation of privilege vulnerability in Windows allowing unauthorized access. Find affected systems and mitigation steps.
An elevation of privilege vulnerability exists when Windows improperly handles hard links, aka 'Windows Hard Link Elevation of Privilege Vulnerability'.
Understanding CVE-2020-0841
What is CVE-2020-0841?
This CVE identifies an elevation of privilege vulnerability in Windows related to hard links, distinct from other CVEs such as CVE-2020-0840.
The Impact of CVE-2020-0841
The vulnerability allows attackers to elevate their privileges on affected Windows systems, potentially leading to unauthorized actions.
Technical Details of CVE-2020-0841
Vulnerability Description
- Type: Elevation of Privilege
- Exploitation: Improper handling of hard links
Affected Systems and Versions
- Windows 10 Versions 1803, 1809, 1709, 1607
- Windows Server Versions 1803, 2019, 2016
- Windows 10 Version 1909 and 1903 for 32-bit, x64-based, and ARM64-based Systems
Exploitation Mechanism
The vulnerability arises from a flaw in how Windows manages hard links, allowing malicious users to exploit this weakness.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates provided by Microsoft promptly
- Monitor for unusual system behavior or unauthorized access
Long-Term Security Practices
- Regularly update and patch systems to prevent known vulnerabilities
- Implement least privilege principles to restrict user access
Patching and Updates
- Install the latest security updates issued by Microsoft to address CVE-2020-0841.