Ensure 'Do not open files in unsafe locations in Protected View' is set to 'Disabled'

AltaNível 1Automatizadaoffice

Descrição

This policy setting determines if files located in unsafe locations will open in Protected View. The recommended state for this setting is: Disabled. Note: If a specified unsafe location(s) is not configured, the "Downloaded Program Files" and "Temporary Internet Files" folders are considered unsafe locations. Rationale: Opening files located in unsafe locations that do not require Protected View could lead to malicious code executing on a user's computer or the network. User setting: the audit checks HKEY_USERS\<SID>\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\protectedview:disableunsafelocationsinpv (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.

Como é verificado

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

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Configure through Group Policy (User Configuration): User Configuration\Administrative Templates\Microsoft Excel 2016\Excel Options\Security\Trust Center\Protected View\Do Not Open Files in Unsafe Locations in Protected View = Disabled

Propriedades

Sistemas operacionais: Qualquer
Tags: officeproductivitycis-l1
Referência: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.3.3 Ensure 'Do not open files in unsafe locations in Protected View' is set to 'Disabled'

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target office