CVE-2017-11823 : Security Advisory and Response

A security vulnerability known as "Microsoft Windows Security Feature Bypass" exists in the Microsoft Device Guard feature present in Microsoft Windows 10 Gold, 1511, 1607, and 1703, as well as Windows Server 2016. This vulnerability arises due to the handling of Windows PowerShell sessions by the feature.

Understanding CVE-2017-11823

This CVE identifies a security feature bypass vulnerability in Microsoft Device Guard on various Windows versions.

What is CVE-2017-11823?

The vulnerability allows attackers to bypass security features in Microsoft Device Guard by manipulating Windows PowerShell sessions.

The Impact of CVE-2017-11823

Attackers can exploit this vulnerability to bypass security controls and potentially execute malicious code.

Technical Details of CVE-2017-11823

This section provides technical details about the vulnerability.

Vulnerability Description

The Microsoft Device Guard on Microsoft Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows a security feature bypass by the way it handles Windows PowerShell sessions.

Affected Systems and Versions

Product: Device Guard
Vendor: Microsoft Corporation
Versions: Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016

Exploitation Mechanism

Attackers exploit the vulnerability by manipulating Windows PowerShell sessions to bypass security controls.

Mitigation and Prevention

Protect your systems from CVE-2017-11823 with the following steps:

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Monitor and restrict PowerShell usage to prevent unauthorized access.
Implement least privilege access to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch your systems to address security vulnerabilities.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Stay informed about security updates from Microsoft and apply them as soon as they are available.