SB2020101367 - Privilege escalation in Microsoft Windows - User Profile Service

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Main Vulnerability Database SB2020101367

SB2020101367 - Privilege escalation in Microsoft Windows - User Profile Service

Published: October 13, 2020

Security Bulletin ID SB2020101367
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-16940)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 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:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way Windows User Profile Service (ProfSvc) handles junction points. A local user can create a malicious application, launch it on the system and delete files and folders in an elevated context.

To exploit this vulnerability, an attacker would first have to log on to the system.


Remediation

Install update from vendor's website.

References