Microsoft Office 365 ProPlus STIG Version Comparison

Microsoft Office 365 ProPlus Security Technical Implementation Guide

Comparison

There are 4 differences between versions v1 r2 (July 24, 2020) (the "left" version) and v2 r2 (April 23, 2021) (the "right" version).

Check O365-CO-000001 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.

The regular view of the left check and right check may be easier to read.

Text Differences

Title

The Macro Runtime Scan Scope must be enabled for all documents.

Check Content

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Office 2016>> Security Settings "Macro Runtime Scan Scope" is set to "Enable for all documents". Use the Windows Registry Editor to navigate to the following key: HKCU\software\policies\microsoft\office\16.0\common\security If the value for macroruntimescanscope is REG_DWORD = 1, 2, this is not a finding.

Discussion

This policy setting specifies for which documents the VBA Runtime Scan feature is enabled. If the feature is disabled for all documents, no runtime scanning of enabled macros will be performed. If the feature is enabled for low trust documents, the feature will be enabled for all documents for which macros are enabled except: - Documents opened while macro security settings are set to "Enable All Macros" - Documents opened from a Trusted Location - Documents that are Trusted Documents - Documents that contain VBA that is digitally signed by a Trusted Publisher If the feature is enabled for all documents, then the above class of documents are not excluded from the behavior. This protocol allows the VBA runtime to report to the Anti-Virus system certain high-risk code behaviors it is about to execute and allows the Anti-Virus to report back to the process if the sequence of observed behaviors indicates likely malicious activity so the Office application can take appropriate action. When this feature is enabled, affected VBA projects' runtime performance may be reduced.

Fix

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Office 2016>> Security Settings "Macro Runtime Scan Scope" to "Enable for all documents".