Windows Server 2019 must have the DoD Interoperability Root Certificate Authority (CA) cross-certificates installed in the Untrusted Certificates Store on unclassified systems.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-205649	WN19-PK-000020	SV-205649r894615_rule		Medium

Description
To ensure users do not experience denial of service when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CAs, the DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182

Description

To ensure users do not experience denial of service when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CAs, the DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182

STIG	Date
Microsoft Windows Server 2019 Security Technical Implementation Guide	2024-02-21

Details

Check Text ( C-5914r894615_chk )
This is applicable to unclassified systems. It is NA for others. Open "PowerShell" as an administrator. Execute the following command: Get-ChildItem -Path Cert:Localmachine\disallowed \| Where {$_.Issuer -Like "DoD Interoperability" -and $_.Subject -Like "DoD"} \| FL Subject, Issuer, Thumbprint, NotAfter If the following certificate "Subject", "Issuer", and "Thumbprint" information is not displayed, this is a finding. Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=DoD Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 49CBE933151872E17C8EAE7F0ABA97FB610F6477 NotAfter: 11/16/2024 9:57:16 AM Alternately, use the Certificates MMC snap-in: Run "MMC". Select "File", "Add/Remove Snap-in". Select "Certificates" and click "Add". Select "Computer account" and click "Next". Select "Local computer: (the computer this console is running on)" and click "Finish". Click "OK". Expand "Certificates" and navigate to Untrusted Certificates >> Certificates. For each certificate with "DoD Root CA..." under "Issued To" and "DoD Interoperability Root CA..." under "Issued By": Right-click on the certificate and select "Open". Select the "Details" tab. Scroll to the bottom and select "Thumbprint". If the certificate below is not listed or the value for the "Thumbprint" field is not as noted, this is a finding. Issued to: DoD Root CA 3 Issued By: DoD Interoperability Root CA 2 Thumbprint: 49CBE933151872E17C8EAE7F0ABA97FB610F6477 Valid to: 11/16/2024 9:57:16 AM

Check Text ( C-5914r894615_chk )

This is applicable to unclassified systems. It is NA for others.

Open "PowerShell" as an administrator.

Execute the following command:

Get-ChildItem -Path Cert:Localmachine\disallowed | Where {$_.Issuer -Like "*DoD Interoperability*" -and $_.Subject -Like "*DoD*"} | FL Subject, Issuer, Thumbprint, NotAfter

If the following certificate "Subject", "Issuer", and "Thumbprint" information is not displayed, this is a finding.

Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US
Issuer: CN=DoD Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US
Thumbprint: 49CBE933151872E17C8EAE7F0ABA97FB610F6477
NotAfter: 11/16/2024 9:57:16 AM

Alternately, use the Certificates MMC snap-in:

Run "MMC".

Select "File", "Add/Remove Snap-in".

Select "Certificates" and click "Add".

Select "Computer account" and click "Next".

Select "Local computer: (the computer this console is running on)" and click "Finish".

Click "OK".

Expand "Certificates" and navigate to Untrusted Certificates >> Certificates.

For each certificate with "DoD Root CA..." under "Issued To" and "DoD Interoperability Root CA..." under "Issued By":

Right-click on the certificate and select "Open".

Select the "Details" tab.

Scroll to the bottom and select "Thumbprint".

If the certificate below is not listed or the value for the "Thumbprint" field is not as noted, this is a finding.

Issued to: DoD Root CA 3
Issued By: DoD Interoperability Root CA 2
Thumbprint: 49CBE933151872E17C8EAE7F0ABA97FB610F6477
Valid to: 11/16/2024 9:57:16 AM

Fix Text (F-5914r894340_fix)
Install the DoD Interoperability Root CA cross-certificates on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 3 - DoD Interoperability Root CA 2 - 49CBE933151872E17C8EAE7F0ABA97FB610F6477 Administrators should run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user. The FBCA Cross-Certificate Remover Tool and User Guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

Fix Text (F-5914r894340_fix)

Install the DoD Interoperability Root CA cross-certificates on unclassified systems.

Issued To - Issued By - Thumbprint

DoD Root CA 3 - DoD Interoperability Root CA 2 - 49CBE933151872E17C8EAE7F0ABA97FB610F6477

Administrators should run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user.

The FBCA Cross-Certificate Remover Tool and User Guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.