Vulnerability identifier: #VU12466

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1039

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor: Microsoft

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

The vulnerability exists due to an error in .Net Framework when processing COM objects. A local user can circumvent a User Mode Code Integrity (UMCI) policy on the machine and bypass Device Guard with a specially crafted application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 4.5.2, 4.6, 3.5.1, 3.5, 3.0, 2.0, 4.7.1, 4.6.1, 4.6.2, 4.7

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1039

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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.