Title

Files from the Internet zone must be opened in Protected View. (Cat II impact)

Discussion

This policy setting allows you to determine if files downloaded from the Internet zone open in Protected View. If you enable this policy setting, files downloaded from the Internet zone do not open in Protected View. If you disable or do not configure this policy setting, files downloaded from the Internet zone open in Protected View.

Check Content

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2016 -> Excel Options -> Security -> Trust Center -> Protected View "Do not open files from the Internet zone in Protected View" is set to "Not Configured" or "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\16.0\excel\security\protectedview Criteria: If the value DisableInternetFilesInPV is REG_DWORD = 0, this is not a finding. If the value does not exist, this is not a finding. If the value is REG_DWORD = 1, then this is a finding.

Fix Text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2016 -> Excel Options -> Security -> Trust Center -> Protected View "Do not open files from the Internet zone in Protected View" to "Not Configured" or "Disabled".

Additional Identifiers

Rule ID: SV-238171r879628_rule

Vulnerability ID: V-238171

Group Title: SRG-APP-000207

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.