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

File validation in Excel must be enabled.

DISA Rule

SV-223334r508019_rule

Vulnerability Number

V-223334

Group Title

SRG-APP-000112

Rule Version

O365-EX-000025

Severity

CAT II

CCI(s)

• CCI-001695 - The information system prevents the execution of organization-defined unacceptable mobile code.

Weight

10

Fix Recommendation

Set policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Turn off file validation to "Disabled".

Check Contents

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Turn off file validation is set to "Disabled".

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

HKCU\software\policies\microsoft\office\16.0\excel\security\filevalidation

If the value for enableonload is REG_DWORD = 1, this is not a finding.

Vulnerability Number

V-223334

Documentable

False

Rule Version

O365-EX-000025

Severity Override Guidance

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Turn off file validation is set to "Disabled".

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

HKCU\software\policies\microsoft\office\16.0\excel\security\filevalidation

If the value for enableonload is REG_DWORD = 1, this is not a finding.

Check Content Reference

M

Target Key

4099

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