CVE-2020-1138: Windows Storage Service Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 7)
CVSS Vector
CVSS:3.0/AV:L/AC:H/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-May
Released
2020-05-12
EPSS Score
0.27% (percentile: 50.8%)

Description

An elevation of privilege vulnerability exists when the Storage Service improperly handles file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges on the victim system. To exploit the vulnerability, an attacker would first have to gain execution on the victim system, then run a specially crafted application. The security update addresses the vulnerability by correcting how the Storage Services handles file operations.

Affected Products (22)

Windows

  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1909 for 32-bit Systems
  • Windows Server, version 1909 (Server Core installation)
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 1909 for ARM64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows Server, version 1903 (Server Core installation)
  • Windows 10 Version 1803 for ARM64-based Systems
  • Windows 10 Version 1709 for ARM64-based Systems
  • Windows 10 Version 1709 for x64-based Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows Server, version 1803 (Server Core Installation)
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1903 for 32-bit Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows 10 Version 1903 for ARM64-based Systems
  • Windows 10 Version 1709 for 32-bit Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows 10 Version 1803 for x64-based Systems

Security Updates (5)

Acknowledgments

Shefang Zhong of <a href="http://www.360.com/">Qihoo 360 Vulcan Team</a>

Revision History

  • 2020-05-12: Information published.