Security Feature Bypass in Windows Device Guard

Published: 2017-12-12 20:01:28
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2017-11899
CVSSv3 3.8 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CWE ID CWE-310
Exploitation vector Network
Public exploit N/A
Vulnerable software Windows
Windows Server
Vulnerable software versions Windows 10
Windows Server 2016
Vendor URL Microsoft

Security Advisory

1) Security feature bypass

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to Device Guard fails to correctly validate untrusted files. A remote attacker can create a specially crafted file and make an unsigned file appear to be signed. Since the Device Guard relies on the signature to determine the file is non-malicious, Device Guard could then allow a malicious file to execute.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11899

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