CVE-2020-3427 - CVE House
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Status published Medium CVE-2020-3427

Duo Authentication for Windows Logon and RDP Privilege Escalation Vulnerability

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • This issue was reported by Ido Hoorvitch from CyberArk

References

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Affected Vendor

Affected Software

Duo Authentication for Windows Logon and RDP
Vulnerable Versions:
unspecified

Timeline

Official Publish: October 14th, 2020
Last Modified: November 13th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Weaknesses (CWE)

CWE-280

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.