Vulnerabilities > CVE-2020-3427 - Unspecified vulnerability in Cisco DUO Authentication for Windows Logon and RDP

CVSS 7.8 - HIGH

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

local

low complexity

cisco

NVD

Published: 2020-10-14

Updated: 2022-09-20

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Cisco Cisco DUO Authentication FOR Windows Logon AND RDP 1.0.6 Cisco DUO Authentication FOR Windows Logon AND RDP 1.0.7 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.0 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.1 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.2 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.3 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.4 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.5 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.6 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.7 Cisco DUO Authentication FOR Windows Logon AND RDP 1.1.8 Cisco DUO Authentication FOR Windows Logon AND RDP 1.2.0.14 Cisco DUO Authentication FOR Windows Logon AND RDP 2.0.0.71 Cisco DUO Authentication FOR Windows Logon AND RDP 2.1.0 Cisco DUO Authentication FOR Windows Logon AND RDP 3.0.0.85 Cisco DUO Authentication FOR Windows Logon AND RDP 3.1.0 Cisco DUO Authentication FOR Windows Logon AND RDP 3.1.1 Cisco DUO Authentication FOR Windows Logon AND RDP 3.1.2 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.0 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.1 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.2 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.3 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.5 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.6 Cisco DUO Authentication FOR Windows Logon AND RDP 4.0.7 Cisco DUO Authentication FOR Windows Logon AND RDP 4.1.0 Cisco DUO Authentication FOR Windows Logon AND RDP 4.1.1	27

References

https://duo.com/docs/rdp-notes