Windows Server 2019 must have the US DoD CCEB Interoperability Root CA cross-certificates in the Untrusted Certificates Store on unclassified systems.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-93491	WN19-PK-000030	SV-103577r1_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 US DoD CCEB 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 US DoD CCEB 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-92807r1_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 "CCEB Interoperability" \| 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=US DoD CCEB Interoperability Root CA 1, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3 NotAfter: 3/9/2019 Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=US DoD CCEB Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E NotAfter: 9/27/2019 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 "US DoD CCEB 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. 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: US DoD CCEB Interoperability Root CA 1 Thumbprint: DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3 Valid to: Saturday, March 9, 2019 Issued To: DoD Root CA 3 Issuer by: US DoD CCEB Interoperability Root CA 2 Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E Valid: Friday, September 27, 2019

Check Text ( C-92807r1_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 "*CCEB Interoperability*" | 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=US DoD CCEB Interoperability Root CA 1, OU=PKI, OU=DoD, O=U.S. Government, C=US
Thumbprint: DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3
NotAfter: 3/9/2019

Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US
Issuer: CN=US DoD CCEB Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
NotAfter: 9/27/2019

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 "US DoD CCEB 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.

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: US DoD CCEB Interoperability Root CA 1
Thumbprint: DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3
Valid to: Saturday, March 9, 2019

Issued To: DoD Root CA 3
Issuer by: US DoD CCEB Interoperability Root CA 2
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
Valid: Friday, September 27, 2019

Fix Text (F-99735r1_fix)
Install the US DoD CCEB Interoperability Root CA cross-certificate on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 2 - US DoD CCEB Interoperability Root CA 1 - DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3 DoD Root CA 3 - US DoD CCEB Interoperability Root CA 2 - 929BF3196896994C0A201DF4A5B71F603FEFBF2E 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-99735r1_fix)

Install the US DoD CCEB Interoperability Root CA cross-certificate on unclassified systems.

Issued To - Issued By - Thumbprint
DoD Root CA 2 - US DoD CCEB Interoperability Root CA 1 - DA36FAF56B2F6FBA1604F5BE46D864C9FA013BA3

DoD Root CA 3 - US DoD CCEB Interoperability Root CA 2 - 929BF3196896994C0A201DF4A5B71F603FEFBF2E

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.