V-73607

Discussion

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

Check Content

Verify the DoD 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, Issuer, Thumbprint, NotAfter

If the following certificate "Subject", "Issuer", and "Thumbprint", information is not displayed, this is 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: AC06108CA348CC03B53795C64BF84403C1DBD341
NotAfter: 1/22/2022

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 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: AC06108CA348CC03B53795C64BF84403C1DBD341
Valid to: Saturday, January 22, 2022