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-93489	WN19-PK-000020	SV-103575r1_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
Windows Server 2019 Security Technical Implementation Guide	2020-06-15

Details

Check Text ( C-92805r1_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. If an expired certificate ("NotAfter" date) is not listed in the results, this is not a finding. Subject: CN=DoD Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=DoD Interoperability Root CA 1, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F NotAfter: 9/6/2019 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: FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4 NotAfter: 2/17/2019 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 certificates below are not listed or the value for the "Thumbprint" field is not as noted, this is a finding. If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding. Issued To: DoD Root CA 2 Issued By: DoD Interoperability Root CA 1 Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F Valid to: Friday, September 6, 2019 Issued To: DoD Root CA 3 Issued By: DoD Interoperability Root CA 2 Thumbprint: FFAD03329B9E527A43EEC66A56F9CBB5393E6E13 Valid to: Sunday, September 23, 2018 Issued To: DoD Root CA 3 Issued By: DoD Interoperability Root CA 2 Thumbprint: FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4 Valid to: Sunday, February 17, 2019

Check Text ( C-92805r1_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.

If an expired certificate ("NotAfter" date) is not listed in the results, this is not a finding.

Subject: CN=DoD Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US
Issuer: CN=DoD Interoperability Root CA 1, OU=PKI, OU=DoD, O=U.S. Government, C=US
Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F
NotAfter: 9/6/2019

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: FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4
NotAfter: 2/17/2019

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

If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding.

Issued To: DoD Root CA 2
Issued By: DoD Interoperability Root CA 1
Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F
Valid to: Friday, September 6, 2019

Issued To: DoD Root CA 3
Issued By: DoD Interoperability Root CA 2
Thumbprint: FFAD03329B9E527A43EEC66A56F9CBB5393E6E13
Valid to: Sunday, September 23, 2018

Issued To: DoD Root CA 3
Issued By: DoD Interoperability Root CA 2
Thumbprint: FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4
Valid to: Sunday, February 17, 2019

Fix Text (F-99733r1_fix)
Install the DoD Interoperability Root CA cross-certificates on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 2 - DoD Interoperability Root CA 1 - 22BBE981F0694D246CC1472ED2B021DC8540A22F DoD Root CA 3 - DoD Interoperability Root CA 2 - FFAD03329B9E527A43EEC66A56F9CBB5393E6E13 DoD Root CA 3 - DoD Interoperability Root CA 2 - FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4 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 IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.

Fix Text (F-99733r1_fix)

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

Issued To - Issued By - Thumbprint
DoD Root CA 2 - DoD Interoperability Root CA 1 - 22BBE981F0694D246CC1472ED2B021DC8540A22F

DoD Root CA 3 - DoD Interoperability Root CA 2 - FFAD03329B9E527A43EEC66A56F9CBB5393E6E13

DoD Root CA 3 - DoD Interoperability Root CA 2 - FCE1B1E25374DD94F5935BEB86CA643D8C8D1FF4

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 IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.