CVE-2019-1423 : Security Advisory and Response

A vulnerability related to elevation of privilege in Windows systems has been identified and assigned the CVE ID CVE-2019-1423.

Understanding CVE-2019-1423

What is CVE-2019-1423?

This vulnerability involves the handling of file creation in protected locations by the StartTileData.dll, known as the 'Windows Elevation of Privilege Vulnerability'.

The Impact of CVE-2019-1423

The vulnerability allows attackers to elevate privileges on affected Windows systems, potentially leading to unauthorized access and control of the system.

Technical Details of CVE-2019-1423

Vulnerability Description

The vulnerability exists in the StartTileData.dll component, specifically in the way it handles file creation in protected locations.

Affected Systems and Versions

Windows 10 Version 1903 for 32-bit Systems
Windows 10 Version 1903 for x64-based Systems
Windows 10 Version 1903 for ARM64-based Systems
Windows Server, version 1903 (Server Core installation)

Exploitation Mechanism

The vulnerability can be exploited by an attacker to manipulate file creation processes in protected areas, leading to privilege escalation.

Mitigation and Prevention

Immediate Steps to Take

Apply security updates provided by Microsoft promptly.
Monitor for any unauthorized system access or unusual activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights.
Regularly review and update security configurations to enhance system protection.

Patching and Updates

Ensure that all affected systems are updated with the latest security patches from Microsoft to mitigate the vulnerability.