CVE-2020-17095: Windows Hyper-V Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.5)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2020-Dec

Released

2020-12-08

EPSS Score

0.69% (percentile: 71.8%)

FAQ

How could an attacker exploit this vulnerability? To exploit this vulnerability, an attacker could run a specially crafted application on a Hyper-V guest that could cause the Hyper-V host operating system to execute arbitrary code when it fails to properly validate vSMB packet data.

Affected Products (14)

Windows

• Windows Server, version 20H2 (Server Core Installation)
• Windows 10 Version 1803 for x64-based Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 1909 for x64-based Systems
• Windows Server, version 1909 (Server Core installation)
• Windows 10 Version 1903 for x64-based Systems
• Windows Server, version 1903 (Server Core installation)
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (Server Core installation)
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)

Security Updates (5)

• 4592438
• 4592446
• 4592440
• 4592449
• 4593226

Acknowledgments

Peter Hlavaty (<a href="https://twitter.com/rezer0dai">@rezer0dai</a>)

Revision History

• 2020-12-08: Information published.