CVE-2018-8217: Medium severity Microsoft Windows 10 vulnerability

Published Jun 14, 2018

Updated

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session, aka "Device Guard Code Integrity Policy Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10. This CVE ID is unique from CVE-2018-8201, CVE-2018-8211, CVE-2018-8212, CVE-2018-8215, CVE-2018-8216, CVE-2018-8221.

Affected Software

4 affected components

Microsoft Windows 10

Microsoft Windows 10=1607

Microsoft Windows 10=1703

Microsoft Windows Server 2016

Remediation

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8217

Event History

Jun 14, 2018

CVE Published

via MITRE·12:00 PM

Data Sourced

via MITRE·12:00 PM

DescriptionWeakness

Data Sourced

via NVD·12:29 PM

RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

The CVSS vector indicates local access and low privileges are required. No user interaction is required.

What is the practical impact of successful exploitation?

An attacker could bypass Device Guard code integrity protections and inject malicious code into a Windows PowerShell session. The CVSS assessment indicates low impact to confidentiality, integrity, and availability.

Which systems should be prioritized for remediation?

Systems running Windows 10 or Windows Server 2016 are identified as affected. Apply the available patch, with particular attention to endpoints and servers where Device Guard and PowerShell are in use.