CVE-2019-1321 Explained : Impact and Mitigation
Learn about CVE-2019-1321, a Windows security flaw allowing privilege escalation. Find affected systems, exploitation details, and mitigation steps here.
Windows CloudStore Elevation of Privilege Vulnerability is a security flaw in Microsoft Windows that allows for privilege escalation due to improper handling of file permissions.
Understanding CVE-2019-1321
What is CVE-2019-1321?
The vulnerability arises from Windows CloudStore's inadequate management of file permissions, specifically the Discretionary Access Control List (DACL), enabling attackers to elevate their privileges.
The Impact of CVE-2019-1321
This vulnerability could be exploited by malicious actors to gain elevated privileges on affected systems, potentially leading to unauthorized access and control over sensitive data.
Technical Details of CVE-2019-1321
Vulnerability Description
The flaw in Windows CloudStore allows attackers to manipulate file DACL, leading to privilege escalation.
Affected Systems and Versions
- Windows 10 Version 1703, 1709, 1803, 1809 (32-bit, x64-based, ARM64-based Systems)
- Windows Server versions 1803, 2019
- Windows 10 Version 1903 for 32-bit, x64-based, ARM64-based Systems
- Windows Server version 1903 (Server Core installation)
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the DACL of a file within Windows CloudStore, granting themselves elevated privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates from Microsoft to patch the vulnerability.
- Monitor system logs for any suspicious activity related to file permissions.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user permissions.
- Regularly conduct security audits to identify and address potential vulnerabilities.
Patching and Updates
Ensure that all affected systems are updated with the latest security patches provided by Microsoft.