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.fso.windows:def:4980
# Standard user accounts must only have Read permissions to the Winlogon registry key.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
#
# MANUAL REVIEW REQUIRED -- the module(s) below could not be reconstructed
# into working code from curated SCC reference data, and are excluded from
# the automated result:
# - regkeyeffectiverights53_object (regkeyeffectiverights53_test) -- Winlogon key has no non-(Users group, Administrators group, SYSTEM, TrustedInstaller) rights to check: <set> composition (base object oval:mil.disa.fso.windows:obj:498002): member unresolved -- no extractor for field "key_wow64_res"
# - regkeyeffectiverights53_object (regkeyeffectiverights53_test) -- Winlogon key has no bad rights for non-(Users group, Administrators group, SYSTEM, TrustedInstaller): <set> composition (base object oval:mil.disa.fso.windows:obj:498002): member unresolved -- cannot derive an existence probe for this object type
# - regkeyeffectiverights53_object (regkeyeffectiverights53_test) -- Winlogon key has no non-(Administrators group, SYSTEM, TrustedInstaller) rights to check: <set> composition (base object oval:mil.disa.fso.windows:obj:498002): member unresolved -- no extractor for field "key_wow64_res"
# - regkeyeffectiverights53_object (regkeyeffectiverights53_test) -- Winlogon key has no bad rights for non-(Administrators group, SYSTEM, TrustedInstaller): <set> composition (base object oval:mil.disa.fso.windows:obj:498002): member unresolved -- cannot derive an existence probe for this object type
# HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon key exists
# registry_object (registry_test)
function test_1 {
return ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon' -Name ''))
}
if (test_1) {
Write-Output "PASS (automated portion only -- MANUAL REVIEW still required, see notes above)"
} else {
Write-Output "FAIL (or see MANUAL REVIEW note above)"
} 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 windows_7 target this check assesses.
# OVAL Definition: oval:mil.disa.fso.windows:def:4980
$WinlogonPath = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
if (-Not (Test-Path $WinlogonPath)) {exit 1}
$WinlogonACL = Get-Acl $WinlogonPath
$expectedPermissions = @{
"BUILTIN\Users" = "Read"
"NT AUTHORITY\SYSTEM" = "FullControl"
"NT SERVICE\TrustedInstaller" = "FullControl"
"LOCAL SERVICE" = "FullControl"
"NETWORK SERVICE" = "FullControl"
"Administrators" = "FullControl"
}
$fail = $false
foreach ($user in $expectedPermissions.Keys) {
if ($WinlogonACL.Access | Where-Object {$_.IdentityReference -eq $user}.FileSystemRights -ne $expectedPermissions[$user]) {
$fail = $true
}
}
if ($fail) {exit 1} else {exit 0}