Disable Trust Bar Notification for unsigned application add-ins

Disable Trust Bar Notification for unsigned application add-ins - Excel

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17187	DTOO131 - Excel	SV-18220r1_rule	ECSC-1	Medium

Description
By default, if an application is configured to require that all add-ins be signed by a trusted publisher, any unsigned add-ins the application loads will be disabled and the application will display the Trust Bar at the top of the active window. The Trust Bar contains a message that informs users about the unsigned add-in.

STIG	Date
Microsoft Excel 2007	2015-10-02

Details

Check Text ( C-17913r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Office Excel 2007 -> Excel Options -> Security -> Trust Center “Disable Trust Bar Notification for unsigned application add-ins” will be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\12.0\Excel\Security Criteria: If the value NoTBPromptUnsignedAddin is REG_DWORD = 1, this is not a finding.

Check Text ( C-17913r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Excel 2007 -> Excel Options -> Security -> Trust Center “Disable Trust Bar Notification for unsigned application add-ins” will be set to “Enabled”.

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

HKCU\Software\Policies\Microsoft\Office\12.0\Excel\Security

Criteria: If the value NoTBPromptUnsignedAddin is REG_DWORD = 1, this is not a finding.

Fix Text (F-17080r1_fix)
The policy value for User Configuration -> Administrative Templates -> Microsoft Office Excel 2007 -> Excel Options -> Security -> Trust Center “Disable Trust Bar Notification for unsigned application add-ins” will be set to “Enabled”.