CVE-2020-0636: Windows Subsystem for Linux 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-Jan
- Released
- 2020-01-14
- Last Updated
- 2020-01-29
- EPSS Score
- 0.50% (percentile: 66.1%)
Description
An elevation of privilege vulnerability exists in the way that the Windows Subsystem for Linux handles files. An attacker who successfully exploited the vulnerability could execute code with elevated privileges.
To exploit the vulnerability, an attacker would first need code execution on a victim system. An attacker could then run a specially crafted application.
The security update addresses the vulnerability by correcting how the Windows Subsystem for Linux handles files.
Affected Products (8)
Windows
- 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 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)
Security Updates (1)
Acknowledgments
<a href="https://twitter.com/decoder_it">Andrea Pierini</a> & <a href="https://twitter.com/padovah4ck">Christian Danieli</a>, Jarvis_1oop of Pinduoduo Security Research Lab, Zhiniang Peng (<a href="https://twitter.com/edwardzpeng">@edwardzpeng</a>) of Qihoo 360 Core Security and Jiadong Lu
Revision History
- 2020-01-14: Information published.
- 2020-01-29: Added an acknowledgement.