SV-223349r961092: Scripts associated with shared folders must be prevented from execution in Outlook. | Microsoft Office 365 ProPlus STIG SCAP Benchmark

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Assessment Title

Rule Text

Scripts associated with shared folders must be prevented from execution in Outlook.

Description

Discussion Text

This policy setting controls whether Outlook executes scripts associated with custom forms or folder home pages for shared folders.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-001170SV-108877V-99773

References

DPMS Target Microsoft Office 365 ProPlus DISA DPMS Target Microsoft Office 365 ProPlus 4099

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual ms_office_365_proplus target this check assesses.

# OVAL Definition: oval:mil.disa.stig.office365:def:223349
$regPath = "HKCU:\Software\Policies\Microsoft\Office\16.0\outlook\security"
$regKey = "sharedfolderscript"
$regValue = 0
if (Test-Path $regPath -ErrorAction SilentlyContinue){
    $regData = Get-ItemProperty -Path $regPath -Name $regKey -ErrorAction SilentlyContinue
    if ($regData -and $regData.$regKey -eq $regValue){
        Write-Output "PASS"
        Exit 0
    }
}
Write-Output "FAIL"
Exit 1

Remediation

Set the policy for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Outlook Options >> Other >> Advanced >> Do not allow Outlook object model scripts to run for shared folders to "Enabled".