SB2017031421 - Device Guard Security Feature Bypass in Microsoft Windows
Published: March 14, 2017
Security Bulletin ID
SB2017031421
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper input validation (CVE-ID: CVE-2017-0007)
The vulnerability allows a remote attacker to bypass certain security restrictions
The vulnerability exists due to insufficient validation of certain elements of a signed PowerShell script within Device Guard. A remote attacker can modify the contents of a PowerShell script without invalidating the signature associated with the file and execute it on vulnerable system.
Successful exploitation of this vulnerability may allow a remote attacker to bypass implemented signature-based protection and compromise vulnerable system.
Remediation
Install update from vendor's website.