CVE-2024-20301: duo Auth Bypass — Fix

Description

A vulnerability in Cisco Duo Authentication for Windows Logon and RDP could allow an authenticated, physical attacker to bypass secondary authentication and access an affected Windows device. This vulnerability is due to a failure to invalidate locally created trusted sessions after a reboot of the affected device. An attacker with primary user credentials could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to access the affected device without valid permissions.

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CVSS v3.1 Score

6.2

MEDIUM

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

Weakness Type (CWE)

CWE-287 Improper Authentication

CWE-613 CWE-613

Affected Products

Vendor	Product	Versions
cisco	duo_authentication_for_windows_logon_and_rdp	4.2.0 — 4.3.0

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-win-bypass-pn42KKBm https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-win-bypass-pn42KKBm

Frequently Asked Questions

What is CVE-2024-20301? +

A vulnerability in Cisco Duo Authentication for Windows Logon and RDP could allow an authenticated, physical attacker to bypass secondary authentication and access an affected Windows device. This vulnerability is due to a failure to invalidate locally created trusted sessions after a reboot of the affected device. An attacker with primary user credentials could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to access the affected device without valid permissions. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2024-20301? +

CVE-2024-20301 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-20301? +

CVE-2024-20301 affects products from cisco, specifically: duo_authentication_for_windows_logon_and_rdp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20301? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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