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

From Microsoft Outlook 2013 STIG

Part of DTOO217 - Prevent publishing to DAV Servers

SV-53870r1_rule Publishing to a Web Distributed and Authoring (DAV) server must be prevented.

Vulnerability discussion

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.

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Fix text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Outlook Options -> Preferences -> Calendar Options -> Office.com Sharing Service "Prevent publishing to a DAV server" to "Enabled".

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