CVE-2020-3427 MEDIUM

CVE-2020-3427: Duo Authentication for Windows Logon and RDP Privilege Escalation Vulnerability

Vendor Cisco
Product Duo Authentication for Windows Logon and RDP
Weakness CWE-280
Published October 14, 2020
Last update November 13, 2024

CVSS base score

6.6/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

The Windows Logon installer prior to 4.1.2 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue.

Key dates

02Disclosure timeline

October 14, 2020 CVE published
November 13, 2024 Record updated