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

高レベル 1自動office

説明

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.

チェック方法

監査方法: Windows レジストリ

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 ', ') } }

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

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

プロパティ

オペレーティングシステム: すべて
タグ: officeproductivitycis-l1
参照: 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'

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target office