CVE-2019-1253 : Security Advisory and Response

A security vulnerability known as an elevation of privilege vulnerability in the Windows AppX Deployment Server is detailed in this CVE.

Understanding CVE-2019-1253

What is CVE-2019-1253?

An elevation of privilege vulnerability exists in the Windows AppX Deployment Server due to improper handling of junctions. This vulnerability requires the attacker to gain execution on the victim's system.

The Impact of CVE-2019-1253

This vulnerability, also referred to as 'Windows Elevation of Privilege Vulnerability,' poses a risk of unauthorized elevation of privileges on affected systems.

Technical Details of CVE-2019-1253

Vulnerability Description

The vulnerability arises from the improper handling of junctions by the Windows AppX Deployment Server.

Affected Systems and Versions

Windows 10 Version 1703, 1709, 1803, 1809 for 32-bit, x64-based, and ARM64-based Systems
Windows Server versions 1803, 2019, and 2019 (Core installation)
Windows 10 Version 1903 for 32-bit, x64-based, and ARM64-based Systems
Windows Server, version 1903 (Server Core installation)

Exploitation Mechanism

To exploit this vulnerability, an attacker must first gain execution on the victim's system.

Mitigation and Prevention

Immediate Steps to Take

Apply security updates provided by Microsoft promptly.
Monitor official sources for patches and security advisories.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Regularly update and patch systems to address known vulnerabilities.
Conduct security training and awareness programs for users and IT staff.

Patching and Updates

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