Ensure 'Excel 4 macrosheets and add-in files' is set to 'Enabled: Open/Save blocked, use open policy'

높음레벨 1자동office

설명

This policy setting determines whether users can open, view, edit, or save Excel files with Excel 4 macrosheets and add-in 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:xl4macros (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.

점검 방법

감사 방식: Windows 레지스트리

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\' + $s + '\SOFTWARE\Policies\Microsoft\office\16.0\excel\security\fileblock') -Name 'xl4macros' -ErrorAction SilentlyContinue).'xl4macros'; if (-not ($null -ne $v -and @(2) -contains [int64]$v)) { $bad += $s + ':xl4macros=' + $v } }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') } }

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Configure through Group Policy (User Configuration): User Configuration\Administrative Templates\Microsoft Excel 2016\Excel Options\Security\Trust Center\File Block Settings\Excel 4 macrosheets and add-in Files = Enabled: Open/Save blocked, use open policy

속성

운영 체제: 모두
태그: officeproductivitycis-l1
참고 자료: CIS Microsoft Office Enterprise Benchmark v2.0.0 - 2.2.4.7.2.2.7 Ensure 'Excel 4 macrosheets and add-in files' is set to 'Enabled: Open/Save blocked, use open policy'

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target office