V-253429

Discussion

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

Check Content

Verify the DoW Interoperability cross-certificates are installed on unclassified systems as Untrusted Certificates.

Run "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, NotAfter

If valid DoW Interoperability cross-certificates (such as those below) are not displayed, this is a finding.
  
Subject: CN=DoD Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US
NotAfter: 11/24/2030 
           
Alternately, use the Certificates MMC snap-in:

Run "MMC".

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

Select "Certificates", click "Add".

Select "Computer account", click "Next".

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

Click "OK".

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

For each DoW Interoperability Root CA certificate displayed:

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

Select the "Details" tab.

Verify the Expiration Date is a future date.

Scroll to the bottom and select "Subject".

If any of the certificates listed do not include "DoD Interoperability Root CA" in the name or are expired, this is a finding.

Note: This should not be relied upon as a complete list of possible DoW Interoperability Root CA certificates.

DoD Interoperability Root CA 2

Note: Interoperability cross certificates will have a different value (such as "...Root CA 6") in the 'Issued To'  field than in the 'Subject' and 'Issuer' fields.