Project: Disable Unsigned Add-ins

πŸ’Ό Management Samenvatting

Disable unsigned Project add-ins - blocks ALL unsigned executable code (stricter than 'require trusted publisher').

Aanbeveling
IMPLEMENT
Risico zonder
Medium
Risk Score
6/10
Implementatie
3u (tech: 1u)
Van toepassing op:
βœ“ Microsoft Project

Unsigned add-ins = zero verification: Project add-ins: Extend functionality (COM add-ins, automation), Unsigned = untrusted (no publisher identity, no integrity check), Malware risk: Fake 'Project enhancement' add-in = trojan. 'Require trusted publisher': Unsigned blocked OR prompts user, 'Disable unsigned' (THIS): ALL unsigned BLOCKED (no user override - strictest).

PowerShell Modules Vereist
Primary API: Intune / GPO
Connection: Registry-based
Required Modules:

Implementatie

Disable unsigned: Policy: Disable all unsigned application add-ins: Enabled, Effect: Unsigned add-ins BLOCKED (no prompt, no override), Signed + trusted: Auto-allow, Signed (not trusted): Prompt user, Code signing: Required for corporate add-ins.

Vereisten

  1. Project 2016+
  2. Code signing infrastructure
  3. Intune of GPO

Implementatie

Intune Settings Catalog: Project\Security\Trust Center β†’ Disable all unsigned application add-ins: Enabled.

Compliance

CIS Office Benchmark L2, BIO 12.06.

Monitoring

Gebruik PowerShell-script disable-unsigned-addins.ps1 (functie Invoke-Monitoring) – Controleren.

Remediatie

Gebruik PowerShell-script disable-unsigned-addins.ps1 (functie Invoke-Remediation) – Herstellen.

Compliance & Frameworks

Automation

Gebruik het onderstaande PowerShell script om deze security control te monitoren en te implementeren. Het script bevat functies voor zowel monitoring (-Monitoring) als remediation (-Remediation).

PowerShell
<# .SYNOPSIS Schakelt alle add-ins uit in Project .DESCRIPTION Dit script implementeert CIS control O365-PR-000002 voor het uitschakelen van alle add-ins in Microsoft Project. Dit voorkomt dat potentieel schadelijke add-ins worden uitgevoerd. .REQUIREMENTS - PowerShell 5.1 of hoger - Lokale administrator rechten voor registry wijzigingen - Microsoft Project geΓ―nstalleerd .PARAMETER Monitoring Controleert de huidige compliance status .PARAMETER Remediation Past de aanbevolen configuratie toe .PARAMETER Revert Herstelt de originele configuratie .PARAMETER WhatIf Toont wat er zou gebeuren zonder wijzigingen door te voeren .EXAMPLE .\disable-unsigned-addins.ps1 -Monitoring Controleert of add-ins zijn uitgeschakeld .EXAMPLE .\disable-unsigned-addins.ps1 -Remediation Schakelt alle add-ins uit .NOTES Registry pad: HKCU:\Software\Policies\Microsoft\Office\16.0\MS Project\Security Waarde: DisableAllAddins = 1 CIS Control: O365-PR-000002 #> #Requires -Version 5.1 param( [switch]$Monitoring, [switch]$Remediation, [switch]$Revert, [switch]$WhatIf ) # Globale variabelen $RegistryPath = "HKCU:\Software\Policies\Microsoft\Office\16.0\MS Project\Security" $ValueName = "DisableAllAddins" $ExpectedValue = 1 $ControlID = "O365-PR-000002" function Test-Compliance { try { if (-not (Test-Path $RegistryPath)) { return $false } $currentValue = Get-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue return ($currentValue -and $currentValue.$ValueName -eq $ExpectedValue) } catch { return $false } } function Invoke-Monitoring { Write-Host "Monitoring ${ControlID}: Alle add-ins uitschakelen in Project" -ForegroundColor Green try { if (-not (Test-Path $RegistryPath)) { Write-Host "βœ— Registry pad bestaat niet: $RegistryPath" -ForegroundColor Red return $false } $currentValue = Get-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue if ($currentValue -and $currentValue.$ValueName -eq $ExpectedValue) { Write-Host "βœ“ Control compliant: ${ValueName} = $ExpectedValue" -ForegroundColor Green return $true } else { $actualValue = if ($currentValue) { $currentValue.$ValueName } else { "Not Set" } Write-Host "βœ— Control non-compliant: ${ValueName} = $actualValue (Expected: $ExpectedValue)" -ForegroundColor Red return $false } } catch { Write-Host "βœ— Fout bij controleren registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } function Invoke-Remediation { Write-Host "Remediating ${ControlID}: Alle add-ins uitschakelen in Project" -ForegroundColor Yellow try { if ($WhatIf) { Write-Host "WhatIf: Zou registry waarde instellen: ${ValueName} = $ExpectedValue" -ForegroundColor Cyan return $true } if (-not (Test-Path $RegistryPath)) { Write-Host "Registry pad aanmaken: $RegistryPath" -ForegroundColor Yellow New-Item -Path $RegistryPath -Force | Out-Null } Set-ItemProperty -Path $RegistryPath -Name $ValueName -Value $ExpectedValue -Type DWord -Force Write-Host "βœ“ Registry waarde succesvol ingesteld: ${ValueName} = $ExpectedValue" -ForegroundColor Green Start-Sleep -Seconds 1 return Invoke-Monitoring } catch { Write-Host "βœ— Fout bij configureren registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } function Invoke-Revert { Write-Host "Reverting ${ControlID}: Add-ins instelling herstellen" -ForegroundColor Yellow try { if ($WhatIf) { Write-Host "WhatIf: Zou registry waarde verwijderen: ${ValueName}" -ForegroundColor Cyan return $true } if (Test-Path $RegistryPath) { Remove-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue Write-Host "βœ“ Registry waarde verwijderd: ${ValueName}" -ForegroundColor Green } return $true } catch { Write-Host "βœ— Fout bij herstellen registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } # Hoofd uitvoering try { if ($Monitoring) { $result = Invoke-Monitoring exit $(if ($result) { 0 } else { 1 }) } elseif ($Remediation) { $result = Invoke-Remediation exit $(if ($result) { 0 } else { 1 }) } elseif ($Revert) { $result = Invoke-Revert exit $(if ($result) { 0 } else { 1 }) } else { Write-Host "Gebruik: .\disable-unsigned-addins.ps1 [-Monitoring] [-Remediation] [-Revert] [-WhatIf]" -ForegroundColor Yellow Write-Host " -Monitoring: Controleer huidige compliance status" -ForegroundColor White Write-Host " -Remediation: Pas aanbevolen configuratie toe" -ForegroundColor White Write-Host " -Revert: Herstel originele configuratie" -ForegroundColor White Write-Host " -WhatIf: Toon wat er zou gebeuren" -ForegroundColor White } } catch { Write-Host "βœ— Onverwachte fout: $($_.Exception.Message)" -ForegroundColor Red exit 1 }

Risico zonder implementatie

Risico zonder implementatie
Medium: Medium: Unsigned Project add-ins = malware risk.

Management Samenvatting

Disable Project unsigned add-ins (strict). No user override. Code signing required. Implementatie: 1-3 uur.