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:539
# Windows Installer – User Control
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
# registry_object (registry_test)
function test_1 {
return ((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer').GetValueKind('EnableUserControl').ToString()]) -eq 'reg_dword')
}
# registry_object (registry_test)
function test_2 {
return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer' -Name 'EnableUserControl')))
}
# registry_object (registry_test)
function test_3 {
return (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer' -Name 'EnableUserControl' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'EnableUserControl') -eq 0)
}
# registry_object (registry_test)
function test_4 {
return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer' -Name 'EnableUserControl')))
}
# registry_object (registry_test)
function test_5 {
return ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer' -Name 'EnableUserControl'))
}
if (((test_1 -or test_2) -and (test_3 -or test_4) -and test_5)) {
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 windows_vista target this check assesses.
# OVAL Definition: oval:mil.disa.fso.windows:def:539
$regPath = "HKLM:\Software\Policies\Microsoft\Windows\Installer"
$regKey = "EnableUserControl"
$regValue = 0
if (-not (Test-Path $regPath)) { $compliant = $true } else {
$regData = Get-ItemProperty -Path $regPath -ErrorAction SilentlyContinue
if ($regData -eq $null -or $regData.$regKey -eq $null) { $compliant = $true } else {
if ($regData.$regKey -eq $regKey -and $regData.$regKey -eq $regValue) { $compliant = $true } else { $compliant = $false }
}
}
if ($compliant) { Write-Output "PASS"; exit 0 } else { Write-Output "FAIL"; exit 1 }