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

VBA Macros not digitally signed must be blocked in Excel.

DISA Rule

SV-223311r508019_rule

Vulnerability Number

V-223311

Group Title

SRG-APP-000141

Rule Version

O365-EX-000002

Severity

CAT II

CCI(s)

• CCI-000381 - The organization configures the information system to provide only essential capabilities.

Weight

10

Fix Recommendation

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Application Settings >> Security >> Trust Center >> "VBA macro Notification Settings" to "Enabled" and "Disable all except digitally signed macros" from the Options.

Check Contents

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Application Settings >> Security >> Trust Center >> "VBA macro Notification Settings" is set to "Enabled" and "Disable all except digitally signed macros" from the Options.

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

HKCU\software\policies\Microsoft\office\16.0\excel\security

If the value vbawarnings is REG_DWORD = 3, this is not a finding.

Vulnerability Number

V-223311

Documentable

False

Rule Version

O365-EX-000002

Severity Override Guidance

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Application Settings >> Security >> Trust Center >> "VBA macro Notification Settings" is set to "Enabled" and "Disable all except digitally signed macros" from the Options.

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

HKCU\software\policies\Microsoft\office\16.0\excel\security

If the value vbawarnings is REG_DWORD = 3, this is not a finding.

Check Content Reference

M

Target Key

4099

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