The loading of images from web pages must not be allowed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17751	DTOO152	SV-53820r1_rule		Medium

Description
When users open web pages in Excel, Excel loads any graphics included in the pages, regardless of whether or not they were originally created in Excel. Allowing Excel to load graphics created in other programs can make Excel vulnerable to possible future zero-day attacks using graphic files as an attack vector. If such an event occurs, this setting can be used to mitigate the vulnerability.

STIG	Date
Microsoft Excel 2013 STIG	2018-04-03

Details

Check Text ( C-47887r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Advanced -> Web Options -> General "Load pictures from Web pages not created in Excel" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\excel\internet Criteria: If the value "DoNotLoadPictures" is REG_DWORD = 1, this is not a finding.

Check Text ( C-47887r1_chk )

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Advanced -> Web Options -> General "Load pictures from Web pages not created in Excel" is set to "Disabled".

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

HKCU\Software\Policies\Microsoft\Office\15.0\excel\internet

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

Fix Text (F-46728r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Advanced -> Web Options -> General "Load pictures from Web pages not created in Excel" to "Disabled".