Document behavior if file validation fails must be set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26616	DTOO292	SV-53834r1_rule		Medium

Description
This policy key controls how Office documents should be handled when failing file validation. By requiring such documents to be opened in Protected View, any potentially malicious code would be disabled, allowing the user to edit the document and resave correctly.

STIG	Date
Microsoft Excel 2013 STIG	2018-04-03

Details

Check Text ( C-47892r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Security -> Trust Center -> Protected View "Set document behavior if file validation fails" is set to "Enabled: Open in Protected View" and Unchecked for "Do not allow edit". Procedure: Use the Windows Registry Editor to navigate to the following keys: If both HKCU\Software\Policies\Microsoft\Office\15.0\excel\security\filevalidation\OpenInProtectedView is set to REG_DWORD = 1 and HKCU\Software\Policies\Microsoft\Office\15.0\excel\security\filevalidation\DisableEditFromPV is set to REG_DWORD = 1, this is not a finding. If either, or both keys, is not set to REG_DWORD = 1, this is a finding.

Check Text ( C-47892r1_chk )

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Security -> Trust Center -> Protected View "Set document behavior if file validation fails" is set to "Enabled: Open in Protected View" and Unchecked for "Do not allow edit".

Procedure: Use the Windows Registry Editor to navigate to the following keys:

If both
HKCU\Software\Policies\Microsoft\Office\15.0\excel\security\filevalidation\OpenInProtectedView is set to REG_DWORD = 1 and HKCU\Software\Policies\Microsoft\Office\15.0\excel\security\filevalidation\DisableEditFromPV is set to REG_DWORD = 1, this is not a finding.

If either, or both keys, is not set to REG_DWORD = 1, this is a finding.

Fix Text (F-46739r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Security -> Trust Center -> Protected View "Set document behavior if file validation fails" to "Enabled: Open in Protected View" and Unchecked for "Do not allow edit".