Ensure 'Set default file block behavior' is set to 'Enabled: Blocked files are not opened'

YüksekDüzey 1Otomatikoffice

Açıklama

This policy setting determines if users can open, view, or edit Excel files that are by default blocked by Microsoft Office. The recommended state for this setting is: Enabled: Blocked files are not opened. Rationale: By default, users can open a wide range of legacy file formats in Office that were not designed with modern security protections in mind. Several of these formats have been associated with vulnerabilities that attackers have exploited. User setting: the audit checks HKEY_USERS\<SID>\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\fileblock:openinprotectedview (REG_DWORD) in every loaded user hive (S-1-5-21-*) and is compliant when each holds 0. 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\' + $s + '\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\fileblock') -Name 'openinprotectedview' -ErrorAction SilentlyContinue).'openinprotectedview'; if (-not ($null -ne $v -and @(0) -contains [int64]$v)) { $bad += $s + ':openinprotectedview=' + $v } }; if ($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\File Block Settings\Set Default File Block Behavior = Enabled: Blocked files are not opened

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: officeproductivitycis-l1
Referans: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.2.13 Ensure 'Set default file block behavior' is set to 'Enabled: Blocked files are not opened'

Bu ana makineyi denetle

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

shell

tmaegis scan --target office