#VU17647 Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2019-0632

Vulnerability identifier: #VU17647

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-0632

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description
The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to an error in Device Guard that can circumvent a User Mode Code Integrity (UMCI) policy on the machine. A local user can create a specially crafted program, bypass the User Mode Code Integrity policy and executed malicious application on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1607 10.0.14393.10, 10 1703 10.0.15063.138, 10 1709 10.0.16299.19, 10 1803 10.0.17134.48, 10 1809 10.0.17763.1, 10

Windows Server: 2016 10.0.14393.10, 2019 10.0.17763.1 - 2019 1803

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0632

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.