Disabling of email forms from the Full Trust Security Zone must be configured.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17655	DTOO173	SV-53383r1_rule		Medium

Description
InfoPath provides three security levels for form templates: Restricted, Domain, and Full Trust. The security levels determine whether a form template can access data on other domains, or access files and settings on your computer. Fully trusted forms have a Full Trust security level, and can access files and settings on users' computers. The form template for these forms must be digitally signed with a trusted root certificate, or installed on users' computers. By default, InfoPath can open email forms with full trust. If an attacker designs and sends a dangerous fully trusted email form, it could affect users' computers or give the attacker access to sensitive information.

Description

InfoPath provides three security levels for form templates: Restricted, Domain, and Full Trust. The security levels determine whether a form template can access data on other domains, or access files and settings on your computer. Fully trusted forms have a Full Trust security level, and can access files and settings on users' computers. The form template for these forms must be digitally signed with a trusted root certificate, or installed on users' computers. By default, InfoPath can open email forms with full trust. If an attacker designs and sends a dangerous fully trusted email form, it could affect users' computers or give the attacker access to sensitive information.

STIG	Date
Microsoft InfoPath 2013 STIG	2018-04-03

Details

Check Text ( C-47628r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable e-mail forms from the Full Trust security zone" 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 EnableFullTrustEmailForms is REG_DWORD = 0, this is not a finding.

Check Text ( C-47628r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable e-mail forms from the Full Trust security zone" 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 EnableFullTrustEmailForms is REG_DWORD = 0, this is not a finding.

Fix Text (F-46307r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> InfoPath e-mail forms "Disable e-mail forms from the Full Trust security zone" to "Enabled".