Title

Disabling of Fully Trusted Solutions access to computers must be configured. (Cat II impact)

Discussion

InfoPath users can choose whether to allow trusted forms to run on their computers. The Full Trust security level allows a form to access local system resources, such as COM components or files on users' computers, and suppresses certain security prompts. It can only be used with forms that are installed on users' computers or with forms using a form template that is digitally signed with a trusted root certificate. As with any security model that allows trusted entities to operate with fewer security controls, if a form with malicious content is marked as fully trusted it could be used to compromise information security or affect users' computers.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> Security -> "Disable fully trusted solutions full access to computer" 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 RunFullTrustSolutions is REG_DWORD = 0, this is not a finding.

Fix Text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2013 -> Security -> "Disable fully trusted solutions full access to computer" to "Enabled".

Additional Identifiers

Rule ID: SV-53353r1_rule

Vulnerability ID: V-17658

Group Title: DTOO159 - Fully trusted solutions access

Expert Comments

CCIs tied to check.

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