Macro storage must be in Personal macro workbooks.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17804	DTOO145 - Excel	SV-33443r1_rule		Medium

Description
The Record Macro dialog box includes a drop-down menu allowing users to choose whether to store the new macro in the current workbook, a new workbook, or their personal macro workbook (Personal.xlsb), a hidden workbook that opens every time Excel starts. By default, Excel displays the Record Macro dialog box with “This Workbook already selected” in the drop-down menu. If a user saves a macro in the active workbook and then distributes the workbook to others, the macro is distributed along with the workbook, which could put workbook data at risk if the macro is triggered accidentally or intentionally.

Description

The Record Macro dialog box includes a drop-down menu allowing users to choose whether to store the new macro in the current workbook, a new workbook, or their personal macro workbook (Personal.xlsb), a hidden workbook that opens every time Excel starts. By default, Excel displays the Record Macro dialog box with “This Workbook already selected” in the drop-down menu. If a user saves a macro in the active workbook and then distributes the workbook to others, the macro is distributed along with the workbook, which could put workbook data at risk if the macro is triggered accidentally or intentionally.

STIG	Date
Microsoft Excel 2010	2018-04-04

Details

Check Text ( C-33926r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center “Store macro in Personal Macro Workbook by default” must be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\excel\options\binaryoptions Criteria: If the value fGlobalSheet_37_1 is REG_DWORD = 1, this is not a finding.

Check Text ( C-33926r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center “Store macro in Personal Macro Workbook by default” must be set to “Enabled”.

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

HKCU\Software\Policies\Microsoft\Office\14.0\excel\options\binaryoptions

Criteria: If the value fGlobalSheet_37_1 is REG_DWORD = 1, this is not a finding.

Fix Text (F-29615r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center “Store macro in Personal Macro Workbook by default” to “Enabled”.