Ensure 'Prevent Excel from running XLM macros' is set to 'Enabled'

YüksekDüzey 1Otomatikoffice

Açıklama

This policy setting will prevent Excel from running Excel 4.0 (XLM) macros. XLM macros were first added to Excel in 1992 and were disabled in Excel (Build 16.0.14427.10000) by Microsoft in 2021. The recommended state for this setting is: Enabled. Rationale: XLM is data macro format from the early nineties that was not built with security in mind. Macros can be easily exploited and are a favorite hiding place of malicious code. User setting: the audit checks HKEY_USERS\<SID>\SOFTWARE\Policies\Microsoft\office\16.0\excel\security:xl4macrooff (REG_DWORD) in every loaded user hive (S-1-5-21-*) and is compliant when each holds 1. It prints 'no-user-hive-loaded' (FAIL) when no user profile is loaded, so scan while users are logged on.

Nasıl denetlenir

Denetim yöntemi: Windows kayıt defteri

registry

$sids = @(Get-ChildItem -Path 'Registry::HKEY_USERS' -ErrorAction SilentlyContinue | Where-Object { $_.PSChildName -match '^S-1-5-21-\d+-\d+-\d+-\d+$' } | ForEach-Object { $_.PSChildName }); if ($sids.Count -eq 0) { 'no-user-hive-loaded' } else { $bad = @(); foreach ($s in $sids) { $v = (Get-ItemProperty -Path ('Registry::HKEY_USERS\' + $s + '\SOFTWARE\Policies\Microsoft\office\16.0\excel\security') -Name 'xl4macrooff' -ErrorAction SilentlyContinue).'xl4macrooff'; if (-not ($null -ne $v -and @(1) -contains [int64]$v)) { $bad += $s + ':xl4macrooff=' + $v } }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') } }

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

Configure through Group Policy (User Configuration): User Configuration\Administrative Templates\Microsoft Excel 2016\Excel Options\Security\Trust Center\Prevent Excel from running XLM macros = Enabled

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: officeproductivitycis-l1
Referans: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.10 Ensure 'Prevent Excel from running XLM macros' is set to 'Enabled'

Bu ana makineyi denetle

Bunu denetleme izniniz olan bir makinede çalıştırın. Tarama salt okunurdur.

shell

tmaegis scan --target office