Rights managed Office Open XML files must be protected.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17769	DTOO187 - Office System	SV-33468r1_rule		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 people.

STIG	Date
Microsoft Office System 2010 STIG	2018-04-04

Details

Check Text ( C-33951r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Office 2010 -> Security Settings “Protect document metadata for rights managed Office Open XML Files” must be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\common\security Criteria: If the value DRMEncryptProperty is REG_DWORD = 1, this is not a finding.

Check Text ( C-33951r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Office 2010 -> Security Settings “Protect document metadata for rights managed Office Open XML Files” must be set to “Enabled”.

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

HKCU\Software\Policies\Microsoft\Office\14.0\common\security

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

Fix Text (F-29640r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Office 2010 -> Security Settings “Protect document metadata for rights managed Office Open XML Files” to “Enabled”.