Block Visio 2000-2002 binary documents - 20+ year old format met unpatched vulnerabilities (legacy format blocking).
Aanbeveling
IMPLEMENT
Risico zonder
Medium
Risk Score
5/10
Implementatie
4u (tech: 1u)
Van toepassing op:
β Microsoft Visio
Visio 2000-2002 = ancient (20+ years): Format age: Visio 2000 (released 1999), Visio 2002 (released 2001) - 20+ years old, Vulnerabilities: Buffer overflows, memory corruption (binary format = complex parser), Patches: Microsoft stopped support 15+ years ago (no security updates), Business use: RARE (most organizations upgraded to Visio 2007+ = .vsdx XML format). Modern Visio: .vsdx (2013+) = XML-based (safer parser, modern security). Attack: Malicious Visio 2000/2002 file β exploits ancient parser β code execution.
BIO 12.02 (Block legacy formats), DISA STIG Office, CIS Office Benchmark.
Monitoring
Gebruik PowerShell-script visio2000-2002-blocked.ps1 (functie Invoke-Monitoring) β Controleren.
Remediatie
Gebruik PowerShell-script visio2000-2002-blocked.ps1 (functie Invoke-Remediation) β Herstellen.
Compliance & Frameworks
BIO: 12.02.01 -
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
Blokkeert Visio 2000-2002 bestanden in Visio
.DESCRIPTION
Dit script implementeert CIS control O365-VI-000004 voor het blokkeren van Visio 2000-2002
bestanden in Microsoft Visio. Deze legacy bestandsformaten kunnen beveiligingsrisico's
vormen en moeten worden geblokkeerd.
.REQUIREMENTS
- PowerShell 5.1 of hoger
- Lokale administrator rechten voor registry wijzigingen
- Microsoft Visio 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
.\visio2000-2002-blocked.ps1 -Monitoring
Controleert of Visio 2000-2002 bestanden zijn geblokkeerd
.EXAMPLE
.\visio2000-2002-blocked.ps1 -Remediation
Blokkeert Visio 2000-2002 bestanden
.NOTES
Registry pad: HKCU:\Software\Policies\Microsoft\Office\16.0\VISIO\Security
Waarde: visio20002002blocked = 1
CIS Control: O365-VI-000004
DISA STIG: Microsoft Office 365 ProPlus v3r3
#>#Requires -Version 5.1param(
[switch]$Monitoring,
[switch]$Remediation,
[switch]$Revert,
[switch]$WhatIf
)
# Globale variabelen$RegistryPath = "HKCU:\Software\Policies\Microsoft\Office\16.0\VISIO\Security"
$ValueName = "visio20002002blocked"
$ExpectedValue = 1$ControlID = "O365-VI-000004"
functionTest-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 ${ControlID}: Visio 2000-2002 bestanden blokkeren" -ForegroundColor Green
try {
if (-not (Test-Path$RegistryPath)) {
Write-Host "β 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 "β Control compliant: ${ValueName} = $ExpectedValue" -ForegroundColor Green
return$true
}
else {
$actualValue = if ($currentValue) { $currentValue.$ValueName } else { "Not Set" }
Write-Host "β Control non-compliant: ${ValueName} = $actualValue (Expected: $ExpectedValue)" -ForegroundColor Red
return$false
}
}
catch {
Write-Host "β Fout bij controleren registry instelling: $($_.Exception.Message)" -ForegroundColor Red
return$false
}
}
function Invoke-Remediation {
Write-Host "Remediating ${ControlID}: Visio 2000-2002 bestanden blokkeren" -ForegroundColor Yellow
try {
if ($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 "β Registry waarde succesvol ingesteld: ${ValueName} = $ExpectedValue" -ForegroundColor Green
Start-Sleep -Seconds 1return Invoke-Monitoring
}
catch {
Write-Host "β Fout bij configureren registry instelling: $($_.Exception.Message)" -ForegroundColor Red
return$false
}
}
function Invoke-Revert {
Write-Host "Reverting ${ControlID}: Visio 2000-2002 blokkering herstellen" -ForegroundColor Yellow
try {
if ($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 "β Registry waarde verwijderd: ${ValueName}" -ForegroundColor Green
}
return$true
}
catch {
Write-Host "β Fout bij herstellen registry instelling: $($_.Exception.Message)" -ForegroundColor Red
return$false
}
}
# Hoofd uitvoeringtry {
if ($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: .\visio2000-2002-blocked.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 "β Onverwachte fout: $($_.Exception.Message)" -ForegroundColor Red
exit 1
}
Risico zonder implementatie
Risico zonder implementatie
Medium: Medium: Visio 2000-2002 = unpatched vulnerabilities (20+ years old).