Microsoft Windows Hard Link CVE-2020-0840 Elevation of Privilege Vulnerability
Description
An elevation of privilege vulnerability exists when Windows improperly handles hard links. An attacker who successfully exploited this vulnerability could overwrite a targeted file leading to an elevated status. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows handles hard links.
Affected Applications
Windows RT 8.1
Windows Server version 1903 (Server Core installation)
Windows Server 2016
Windows Server version 1803 (Server Core Installation)
Windows Server 2012
Windows 8
Windows 10
Windows Server version 1909 (Server Core installation)
Windows Server 2019