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Outlook Object Model scripts must be disallowed to run for shared folders.


Overview

Finding ID Version Rule ID IA Controls Severity
V-17676 DTOO232 SV-53899r1_rule Medium
Description
In Outlook, folders can be associated with custom forms or folder home pages that include scripts that access the Outlook object model. These scripts can add functionality to the folders and items contained within, but dangerous scripts can pose security risks. By default, Outlook does not allow scripts included in custom forms or folder home pages for shared folders to execute. If this configuration is changed, users can inadvertently run dangerous scripts when using shared folders, which can put their computers or data at risk.
STIG Date
Microsoft Outlook 2013 STIG 2017-03-17

Details

Check Text ( C-47923r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Outlook Options -> Other -> Advanced "Do not allow Outlook object model scripts to run for shared folders" is set to "Enabled".

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

HKCU\Software\Policies\Microsoft\Office\15.0\outlook\security

Criteria: If the value SharedFolderScript is REG_DWORD = 0, this is not a finding.
Fix Text (F-46803r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Outlook Options -> Other -> Advanced "Do not allow Outlook object model scripts to run for shared folders" to "Enabled".