Vulnerability identifier: #VU27846

Vulnerability risk: High

CVSSv3.1: 7 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1112

CWE-ID: CWE-20

Exploitation vector: Local network

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 remote user to escalate privileges on the system.

The vulnerability exists in the way the Windows Background Intelligent Transfer Service (BITS) IIS module handles uploaded content. A remote user with permissions to upload files via BITS can upload restricted file types to an IIS-hosted folder.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows: 10 - 10 1909, 7, 8.1 - 8.1 RT

Windows Server: 2008 - 2019 1909

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1112

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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