Ensure 'Macro Notification Settings' is set to 'Require macros to be signed by a trusted publisher'

ÉlevéeNiveau 1Automatiséeoffice

Description

This policy setting controls how the specified applications warn users when Visual Basic for Applications (VBA) macros or Excel 4.0 (XLM) macros are present. Multiple Office apps support VBA macros, but XLM macros are only supported by Excel. Disable VBA macros except digitally signed macros: The application displays the Trust Bar for digitally signed macros, allowing users to enable them or leave them disabled. Rationale: When users open files in Excel that contain VBA macros, Excel opens the files with the macros disabled, and displays the Trust Bar with a warning that macros are present and have been disabled. User setting: the audit checks HKEY_USERS\<SID>\SOFTWARE\Policies\Microsoft\office\16.0\excel\security:vbadigsigtrustedpublishers (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.

Méthode de vérification

Méthode d'audit: Registre Windows

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\' + $s + '\SOFTWARE\Policies\Microsoft\office\16.0\excel\security') -Name 'vbadigsigtrustedpublishers' -ErrorAction SilentlyContinue).'vbadigsigtrustedpublishers'; if (-not ($null -ne $v -and @(1) -contains [int64]$v)) { $bad += $s + ':vbadigsigtrustedpublishers=' + $v } }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') } }

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Configure through Group Policy (User Configuration): User Configuration\Administrative Templates\Microsoft Excel 2016\Excel Options\Security\Trust Center\Macro Notification Settings = Require macros to be signed by a trusted publisher

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: officeproductivitycis-l1
Référence: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.9 Ensure 'Macro Notification Settings' is set to 'Require macros to be signed by a trusted publisher'

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target office