STIGQter: STIG Summary: Microsoft Office 365 ProPlus Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

Trust Bar notifications must be configured to display information in the Message Bar about the content that has been automatically blocked.

DISA Rule

SV-223290r508019_rule

Vulnerability Number

V-223290

Group Title

SRG-APP-000131

Rule Version

O365-CO-000007

Severity

CAT II

CCI(s)

• CCI-001749 - The information system prevents the installation of organization-defined software components without verification the software component has been digitally signed using a certificate that is recognized and approved by the organization.

Weight

10

Fix Recommendation

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Office 2016 >> Security Settings "Disable all Trust Bar notifications for security issues" to "Disabled".

Check Contents

Verify the policy value for User Configuration >> Microsoft Office 2016 >> Security Settings >> Disable all Trust Bar notifications for security issues is set to "Disabled".

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

HKCU\software\policies\microsoft\office\16.0\common\trustcenter

If the value for trustbar is set to REG_DWORD = 0, this is not a finding.

Vulnerability Number

V-223290

Documentable

False

Rule Version

O365-CO-000007

Severity Override Guidance

Verify the policy value for User Configuration >> Microsoft Office 2016 >> Security Settings >> Disable all Trust Bar notifications for security issues is set to "Disabled".

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

HKCU\software\policies\microsoft\office\16.0\common\trustcenter

If the value for trustbar is set to REG_DWORD = 0, this is not a finding.

Check Content Reference

M

Target Key

4099

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