Visio 5.0 or earlier Binary Drawings, Templates and Stencils must be blocked.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-99873	O365-VI-000006	SV-108977r1_rule		Medium

Description
This policy setting allows you to determine whether users can open or save Visio files with the format specified by the title of this policy setting. If you enable this policy setting, you can specify whether users can open or save files. The options that can be selected are below. Note: Not all options may be available for this policy setting. -Do not block: The file type will not be blocked. -Save blocked: Saving of the filet type will be blocked. -Open/Save blocked: Both opening and saving of the file type will be blocked. If you disable or do not configure this policy setting, the file type will be blocked.

Description

This policy setting allows you to determine whether users can open or save Visio files with the format specified by the title of this policy setting. If you enable this policy setting, you can specify whether users can open or save files. The options that can be selected are below. Note: Not all options may be available for this policy setting. -Do not block: The file type will not be blocked. -Save blocked: Saving of the filet type will be blocked. -Open/Save blocked: Both opening and saving of the file type will be blocked. If you disable or do not configure this policy setting, the file type will be blocked.

STIG	Date
Microsoft Office 365 ProPlus Security Technical Implementation Guide	2020-06-17

Details

Check Text ( C-98723r2_chk )
Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Visio 2016 >> Visio Options >> Security >> Trust Center >> File Block Settings "Visio 5.0 or earlier Binary Drawings, Templates and Stencils" is set to "Enabled" and "Open/Save blocked". Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\16.0\visio\security\fileblock If the value "visio50andearlierfiles" is REG_DWORD = 2, this is not a finding.

Check Text ( C-98723r2_chk )

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Visio 2016 >> Visio Options >> Security >> Trust Center >> File Block Settings "Visio 5.0 or earlier Binary Drawings, Templates and Stencils" is set to "Enabled" and "Open/Save blocked".

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

HKCU\Software\Policies\Microsoft\Office\16.0\visio\security\fileblock

If the value "visio50andearlierfiles" is REG_DWORD = 2, this is not a finding.

Fix Text (F-105557r2_fix)
Set the policy value for User Configuration >> Administrative Templates >> Microsoft Visio 2016 >> Visio Options >> Security >> Trust Center >> File Block Settings "Visio 5.0 or earlier Binary Drawings, Templates and Stencils" to "Enabled" and "Open/Save blocked".