A form that is digitally signed must be displayed with a warning.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26621	DTOO297	SV-53432r1_rule		Medium

Description
This setting controls whether or not the user sees a dialog box when opening Microsoft InfoPath forms containing digitally signed content. By default, InfoPath shows the user a warning message when the form contains a digital signature. By being aware of a digitally signed form, the user will be able to check the validity of the signature. Otherwise, the forms may have been maliciously modified and will be invalidated.

Description

This setting controls whether or not the user sees a dialog box when opening Microsoft InfoPath forms containing digitally signed content. By default, InfoPath shows the user a warning message when the form contains a digital signature. By being aware of a digitally signed form, the user will be able to check the validity of the signature. Otherwise, the forms may have been maliciously modified and will be invalidated.

STIG	Date
Microsoft InfoPath 2013 STIG	2018-04-03

Details

Check Text ( C-47665r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> Security "Display a warning that a form is digitally signed" must be set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\InfoPath\security Criteria: If the value SignatureWarning is REG_DWORD = 1, this is not a finding.

Check Text ( C-47665r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> Security "Display a warning that a form is digitally signed" must be set to "Enabled".

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

HKCU\Software\Policies\Microsoft\Office\15.0\InfoPath\security

Criteria: If the value SignatureWarning is REG_DWORD = 1, this is not a finding.

Fix Text (F-46356r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> Security "Display a warning that a form is digitally signed" to "Enabled".