The InfoPath APTCA Assembly Allowable List must be enforced.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26697	DTOO309 - InfoPath	SV-34226r1_rule	ECSC-1	Medium

Description
InfoPath 2010 forms' business logic can only call into Global Assembly Cache (GAC) assemblies listed in the APTCA Assembly Allowable List. If this configuration is changed, forms can call into any assembly in the GAC where the Allow Partially Trust Callers Attribute (APTCA) is set. This configuration could allow malicious developers to access assemblies in the GAC not intended to be used by InfoPath forms.

Description

InfoPath 2010 forms' business logic can only call into Global Assembly Cache (GAC) assemblies listed in the APTCA Assembly Allowable List. If this configuration is changed, forms can call into any assembly in the GAC where the Allow Partially Trust Callers Attribute (APTCA) is set. This configuration could allow malicious developers to access assemblies in the GAC not intended to be used by InfoPath forms.

STIG	Date
Microsoft InfoPath 2010	2014-04-03

Details

Check Text ( C-34403r1_chk )
The policy value for Computer Configuration -> Administrative Templates -> Microsoft InfoPath 2010 (Machine) -> Security “InfoPath APTCA Assembly Allowable List Enforcement” must be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\office\14.0\infopath\security Criteria: If the value APTCA_AllowList is REG_DWORD = 1, this is not a finding.

Check Text ( C-34403r1_chk )

The policy value for Computer Configuration -> Administrative Templates -> Microsoft InfoPath 2010 (Machine) -> Security “InfoPath APTCA Assembly Allowable List Enforcement” must be set to “Enabled”.

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

HKLM\Software\Policies\Microsoft\office\14.0\infopath\security

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

Fix Text (F-30013r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft InfoPath 2010 (Machine) -> Security “InfoPath APTCA Assembly Allowable List Enforcement” to “Enabled”.