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File validation in Word must be enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-223418 O365-WD-000019 SV-223418r508019_rule Medium
Description
This policy setting allows the file validation feature to be turned off. If this policy setting is enabled, file validation will be turned off. If this policy setting is disabled or not configured, file validation will be turned on. Office Binary Documents (97-2003) are checked to see if they conform to the file format schema before they are opened.
STIG Date
Microsoft Office 365 ProPlus Security Technical Implementation Guide 2022-06-17

Details

Check Text ( C-25091r442473_chk )
Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Word 2016 >> Word 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\word\security\filevalidation

If the value for enableonload is REG_DWORD = 1, this is not a finding.
Fix Text (F-25079r442474_fix)
Set policy value for User Configuration >> Administrative Templates >> Microsoft Word 2016 >> Word Options >> Security >> Turn off file validation to "Disabled".