CVE-2020-1292: OpenSSH for Windows Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 8.8)
CVSS Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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
EPSS Score
12.13% (percentile: 93.8%)

Description

An elevation of privilege vulnerability exists in OpenSSH for Windows when it does not properly restrict access to configuration settings. An attacker who successfully exploited this vulnerability could replace the shell with a malicious binary. To exploit this vulnerability, an authenticated attacker would need to modify the OpenSSH for Windows configuration on a vulnerable system. The attacker would then need to convince a user to connect to the vulnerable OpenSSH for Windows server. The update addresses the vulnerability by restricting access to OpenSSH for Windows configuration settings.

Affected Products (21)

Windows

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

Security Updates (4)

Acknowledgments

William Knowles (<a href="https://twitter.com/william_knows">@william_knows</a>)

Revision History

  • 2020-06-09: Information published.