CVE-2020-0981 Explained : Impact and Mitigation

A security feature bypass vulnerability in Windows has been detected and poses a risk to various versions of Windows 10 and Windows Server.

Understanding CVE-2020-0981

This CVE details a security feature bypass vulnerability present in Windows operating systems that could lead to a sandbox escape.

What is CVE-2020-0981?

This CVE describes a situation where Windows does not properly manage token relationships, enabling an attacker to execute code from a different integrity level, potentially escaping a sandbox environment.

The Impact of CVE-2020-0981

The vulnerability allows an application with specific integrity levels to run code with different integrity levels, creating a pathway for a sandbox escape attack.

Technical Details of CVE-2020-0981

Vulnerability Description

The security flaw arises from Windows' mishandling of token relationships, enabling unauthorized code execution at different integrity levels.

Affected Systems and Versions

Windows 10 Version 1909 for 32-bit, x64-based, and ARM64-based Systems
Windows Server, version 1909 (Server Core installation)
Windows 10 Version 1903 for 32-bit, x64-based, and ARM64-based Systems
Windows Server, version 1903 (Server Core installation)

Exploitation Mechanism

The vulnerability allows an application to execute code beyond its assigned integrity level, facilitating a sandbox escape scenario.

Mitigation and Prevention

Immediate Steps to Take

Apply the security update provided by Microsoft to address the vulnerability.
Maintain strict access controls and user privilege management.
Monitor system activity for any suspicious behavior indicating a sandbox escape attempt.

Long-Term Security Practices

Regularly update the operating system and installed applications to patch any security gaps.
Conduct security training for users and administrators to prevent potential breaches.
Implement intrusion detection systems to recognize and respond to unauthorized system access.

Patching and Updates

Update your Windows systems to the latest version available for the affected systems to ensure the security feature bypass vulnerability is remediated.