Publishing to a Web Distributed and Authoring (DAV) server must be prevented.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-71131	DTOO217	SV-85755r1_rule		Medium

Description
Outlook users can share their calendars with others by publishing them to a server that supports the World Wide Web Distributed Authoring and Versioning (WebDAV) protocol. Unlike the Microsoft Office Online Calendar Sharing Service, which allows users to manage other people's access to their calendars, DAV access restrictions can only be accomplished through server and folder permissions, and might require the assistance of the server administrator to set up and maintain. If these permissions are not managed properly, unauthorized individuals could access sensitive information.

Description

Outlook users can share their calendars with others by publishing them to a server that supports the World Wide Web Distributed Authoring and Versioning (WebDAV) protocol. Unlike the Microsoft Office Online Calendar Sharing Service, which allows users to manage other people's access to their calendars, DAV access restrictions can only be accomplished through server and folder permissions, and might require the assistance of the server administrator to set up and maintain. If these permissions are not managed properly, unauthorized individuals could access sensitive information.

STIG	Date
Microsoft Outlook 2016 STIG	2016-07-28

Details

Check Text ( None )
None

Fix Text (F-46775r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2016 -> Outlook Options -> Preferences -> Calendar Options -> Office.com Sharing Service "Prevent publishing to a DAV server" to "Enabled".