Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2020-0787
Published: March 10, 2020 / Updated: November 17, 2021
Vulnerability identifier: #VU25962
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2020-0787
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows Background Intelligent Transfer Service (BITS) handles symbolic links. A local user can create a malicious application, launch it on the system and overwrite a targeted file leading to an elevated status.
To exploit this vulnerability, an attacker would first have to log on to the system.
How to mitigate CVE-2020-0787
Install update from vendor's website.