InfoPath email forms in Outlook must be disallowed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26619	DTOO295	SV-53389r1_rule		Medium

Description
Attackers can send users InfoPath email forms in an attempt to gain access to confidential information. Depending on the level of trust of the forms, it might also be possible to gain access to other data automatically. By default, Outlook 2013 uses the InfoPath email forms feature to render forms in Outlook and allows users to fill them out in place.

STIG	Date
Microsoft InfoPath 2013 STIG	2018-04-03

Details

Check Text ( C-47631r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable InfoPath e-mail forms in Outlook" must be set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\outlook\options\mail Criteria: If the value DisableInfopathForms is REG_DWORD = 1, this is not a finding.

Check Text ( C-47631r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable InfoPath e-mail forms in Outlook" must be set to "Enabled".

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

HKCU\Software\Policies\Microsoft\Office\15.0\outlook\options\mail

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

Fix Text (F-46313r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable InfoPath e-mail forms in Outlook" to "Enabled".