Rights managed Office Open XML files must be protected.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17769	DTOO187	SV-52724r1_rule	ECSC-1	Medium

Description
When Information Rights Management (IRM) is used to restrict access to an Office Open XML document, any metadata associated with the document is not encrypted. This configuration could allow potentially sensitive information such as the document author and hyperlink references to be exposed to unauthorized individuals.

STIG	Date
Microsoft Office System 2013 STIG	2014-12-23

Details

Check Text ( C-47052r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Office 2013 -> Security Settings "Protect document metadata for rights managed Office Open XML Files" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\common\security Criteria: If the value DRMEncryptProperty is REG_DWORD = 1, this is not a finding.

Check Text ( C-47052r1_chk )

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Office 2013 -> Security Settings "Protect document metadata for rights managed Office Open XML Files" is set to "Enabled".

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

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

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

Fix Text (F-45649r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Office 2013 -> Security Settings "Protect document metadata for rights managed Office Open XML Files" to "Enabled".