Ensure 'Excel 2 macrosheets and add-in files' is set to 'Enabled: Open/Save blocked, use open policy'

HochStufe 1Automatisiertoffice

Beschreibung

This policy setting determines whether users can open, view, edit, or save Excel files with Excel 2 macrosheets file format. Open/Save blocked, use open policy: Both opening and saving of the file type will be blocked. The file will open based on the policy setting configured in the "default file block behavior" key. The recommended state for this setting is: Enabled: Open/Save blocked, use open policy. Rationale: Using legacy file formats could allow malicious code to become active on a user's computer or the network. User setting: the audit checks HKEY_USERS\<SID>\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\fileblock:xl2macros (REG_DWORD) in every loaded user hive (S-1-5-21-*) and is compliant when each holds 2. It prints 'no-user-hive-loaded' (FAIL) when no user profile is loaded, so scan while users are logged on.

So wird geprüft

Prüfmethode: Windows-Registrierung

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\' + $s + '\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\fileblock') -Name 'xl2macros' -ErrorAction SilentlyContinue).'xl2macros'; if (-not ($null -ne $v -and @(2) -contains [int64]$v)) { $bad += $s + ':xl2macros=' + $v } }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') } }

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Configure through Group Policy (User Configuration): User Configuration\Administrative Templates\Microsoft Excel 2016\Excel Options\Security\Trust Center\File Block Settings\Excel 2 Macrosheets and Add-in Files = Enabled: Open/Save blocked, use open policy

Eigenschaften

Betriebssysteme: Beliebig
Tags: officeproductivitycis-l1
Referenz: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.2.3 Ensure 'Excel 2 macrosheets and add-in files' is set to 'Enabled: Open/Save blocked, use open policy'

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shell

tmaegis scan --target office