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Scripts in One-Off Outlook forms must be disallowed.


Overview

Finding ID Version Rule ID IA Controls Severity
V-17562 DTOO246 SV-53993r1_rule ECSC-1 Medium
Description
Malicious code can be included within Outlook forms, and such code could be executed when users open the form. By default, Outlook does not run scripts in forms in which the script and the layout are contained within the message.
STIG Date
Microsoft Outlook 2013 STIG 2014-01-06

Details

Check Text ( C-47964r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security -> Security Form Settings -> Custom Form Security "Allow scripts in one-off Outlook forms" is set to "Disabled".

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 EnableOneOffFormScripts is REG_DWORD = 0, this is not a finding
Fix Text (F-46882r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security -> Security Form Settings -> Custom Form Security "Allow scripts in one-off Outlook forms" to "Disabled".