SV-220905r958448: The DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems. | Microsoft Windows 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

The DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.

Description

Discussion Text

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.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000185Not mappedCCI-002470V-63587SV-78077

References

DPMS Target Microsoft Windows 10 DISA DPMS Target Microsoft Windows 10 4072

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.stig.windows10:def:220905
# The DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# DoD Interoperability Root CA 2 certificate expiring 11/16/2024 is installed in the Untrusted Certificates Store
# registry_object (registry_test)
function test_1 {
  return ((($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\49CBE933151872E17C8EAE7F0ABA97FB610F6477' -Name '^.+$')) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EnterpriseCertificates\Disallowed\Certificates\49CBE933151872E17C8EAE7F0ABA97FB610F6477' -Name '^.+$'))) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates\49CBE933151872E17C8EAE7F0ABA97FB610F6477' -Name '^.+$')))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual ms_windows_10 target this check assesses.

# OVAL Definition: oval:mil.disa.stig.windows10:def:220905
$certThumbprint = "49CBE933151872E17C8EAE7F0ABA97FB610F6477"
$paths = @("SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\$certThumbprint", "SOFTWARE\Microsoft\EnterpriseCertificates\Disallowed\Certificates\$certThumbprint", "SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates\$certThumbprint")
$compliant = $true
foreach ($path in $paths) {
    if (-not (Test-Path "HKLM:\$path")) {
        $compliant = $false
    }
}
if ($compliant) { 
    Write-Output "PASS"
    Exit 0
} else {
    Write-Output "FAIL"
    Exit 1
}

Remediation

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 
                  
The certificates can be installed using the InstallRoot tool. The tool and user guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files. PKI can be found at https://crl.gds.disa.mil/.