Corrupt workbook options must be disallowed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-41346	DTOO419	SV-53843r1_rule		Medium

Description
This setting controls whether Excel presents users with a list of data extraction options before beginning an Open and Repair operation when users choose to open a corrupt workbook in repair or extract mode. A corrupt Excel file may be indicative of malicious tampering. By allowing the automatic handling of corrupt spreadsheets, malicious code may be introduced to the user's computer and the network.

Description

This setting controls whether Excel presents users with a list of data extraction options before beginning an Open and Repair operation when users choose to open a corrupt workbook in repair or extract mode. A corrupt Excel file may be indicative of malicious tampering. By allowing the automatic handling of corrupt spreadsheets, malicious code may be introduced to the user's computer and the network.

STIG	Date
Microsoft Excel 2013 STIG	2018-04-03

Details

Check Text ( C-47897r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Data Recovery -> "Do not show data extraction options when opening corrupt workbooks" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\software\policies\microsoft\office\15.0\excel\options Criteria: If the value extractdatadisableui is REG_DWORD = 1, this is not a finding.

Check Text ( C-47897r1_chk )

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Data Recovery -> "Do not show data extraction options when opening corrupt workbooks" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key:

HKCU\software\policies\microsoft\office\15.0\excel\options Criteria: If the value extractdatadisableui is REG_DWORD = 1, this is not a finding.

Fix Text (F-46746r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Data Recovery -> "Do not show data extraction options when opening corrupt workbooks" to "Enabled".