SV-253428r1256659: The External Root CA certificates must be installed in the Trusted Root Store on unclassified systems. | Microsoft Windows 11 STIG SCAP Benchmark

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Assessment Title

Rule Text

The External Root CA certificates must be installed in the Trusted Root Store on unclassified systems.

Description

Discussion Text

To ensure secure websites protected with External Certificate Authority (ECA) server certificates are properly validated, the system must trust the ECA Root CAs. The ECA root certificates will ensure the trust chain is established for server certificates issued from the External CAs. This requirement applies only to unclassified systems.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000185

References

DPMS Target Microsoft Windows 11 DISA DPMS Target Microsoft Windows 11 5471

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.windows11:def:253428
# The External Root CA certificates must be installed in the Trusted Root 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.

# ECA Root CA 4 certificate expiring 12/30/2029 is installed in the Trusted Root Store
# registry_object (registry_test)
function test_1 {
  return ((($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates\73E8BB08E337D6A5A6AEF90CFFDD97D9176CB582' -Name '^.+$')) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EnterpriseCertificates\Root\Certificates\73E8BB08E337D6A5A6AEF90CFFDD97D9176CB582' -Name '^.+$'))) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\SystemCertificates\Root\Certificates\73E8BB08E337D6A5A6AEF90CFFDD97D9176CB582' -Name '^.+$')))
}
# ECA Root CA 5 certificate expiring 03/12/2050 is installed in the Trusted Root Store
# registry_object (registry_test)
function test_2 {
  return ((($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates\DB00E5B7CC9393031FE8A61DF66C657C7462BB21' -Name '^.+$')) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EnterpriseCertificates\Root\Certificates\DB00E5B7CC9393031FE8A61DF66C657C7462BB21' -Name '^.+$'))) -or ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\SystemCertificates\Root\Certificates\DB00E5B7CC9393031FE8A61DF66C657C7462BB21' -Name '^.+$')))
}

if ((test_1 -and test_2)) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Remediation

Install valid (unexpired) ECA Root CA certificates on unclassified systems. 

The list below is not to be treated as exhaustive. The STIG should not be used as a definitive resource for the organizationally approved certificates for the systems.

ECA Root CA 4
ECA Root CA 5

The InstallRoot tool is available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files. Certificate bundles published by the PKI can be found at https://crl.gds.disa.mil/.