Internet with Safe Zones for Picture Download must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17630	DTOO274 - Outlook	SV-33561r2_rule	ECSC-1	Medium

Description
Malicious e-mail senders can send HTML e-mail messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether recipients open the messages. Viewing e-mail messages that contain Web beacons provides confirmation that the recipient's e-mail address is valid, which leaves the recipient vulnerable to additional spam and harmful e-mail. By default, Outlook does not download external content in HTML e-mail messages from untrusted senders via the Internet. If this configuration is changed, Outlook will display external content in all HTML e-mail messages received from the Internet, which could include Web beacons.

Description

Malicious e-mail senders can send HTML e-mail messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether recipients open the messages. Viewing e-mail messages that contain Web beacons provides confirmation that the recipient's e-mail address is valid, which leaves the recipient vulnerable to additional spam and harmful e-mail. By default, Outlook does not download external content in HTML e-mail messages from untrusted senders via the Internet. If this configuration is changed, Outlook will display external content in all HTML e-mail messages received from the Internet, which could include Web beacons.

STIG	Date
Microsoft Outlook 2010	2015-09-18

Details

Check Text ( None )
None

Fix Text (F-29706r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Automatic Picture Download Settings “Include Internet in Safe Zones for Automatic Picture Download” to “Disabled”.