Vulnerability identifier: #VU9315

Vulnerability risk: Medium

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-11830

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

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

The vulnerability exists when Device Guard incorrectly validates an untrusted file. A remote attacker can make an unsigned file appear to be signed and trusted and trick the victim into executing it.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10

Windows Server: 2016

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11830

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.