CVE-2020-1162: Windows Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2020-Jun

Released

2020-06-09

Last Updated

2020-09-08

EPSS Score

0.28% (percentile: 51.3%)

Description

An elevation of privilege (user to user) vulnerability exists in Windows Security Health Service when handling certain objects in memory. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability to elevate privileges. The update addresses the vulnerability by correcting how Windows Security Health Service handles certain objects in memory.

Affected Products (24)

Windows

• Windows 10 Version 1803 for ARM64-based Systems
• Windows 10 Version 1803 for x64-based Systems
• Windows 10 Version 1903 for 32-bit Systems
• Windows 10 Version 1709 for x64-based Systems
• Windows 10 Version 1903 for x64-based Systems
• Windows 10 Version 1709 for ARM64-based Systems
• Windows Server 2019 (Server Core installation)
• Windows Server, version 1903 (Server Core installation)
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2019
• Windows 10 Version 1809 for ARM64-based Systems
• Windows 10 Version 1803 for 32-bit Systems
• Windows 10 Version 1903 for ARM64-based Systems
• Windows Server, version 1803 (Server Core Installation)
• Windows 10 Version 2004 for 32-bit Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows Server, version 2004 (Server Core installation)
• Windows 10 Version 2004 for x64-based Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 1909 for ARM64-based Systems
• Windows Server, version 1909 (Server Core installation)
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 1709 for 32-bit Systems

Security Updates (5)

• 4561621
• 4574727
• 4561602
• 4570333
• 4557957

Acknowledgments

WenQunWang of Codesafe Team of Legendsec at Qi'anxin Group

Revision History

• 2020-06-09: Information published.
• 2020-09-08: To comprehensively address this vulnerability, Microsoft has released the September 2020 security updates for all supported editions of Windows 10 Version 1809 and Windows Server 2019; Windows 10 Version 1903 and Windows Server, version 1903 (Server Core installation); and Windows 10 version 1909 and Windows Server, version 1909 (Server Core installation). Microsoft strongly recommends that customers running any of these versions of Windows 10 or Windows Server install the updates to be fully protected from this vulnerability. Customers whose systems are configured to receive automatic updates do not need to take any further action.