The IIS 8.5 website must have Web Distributed Authoring and Versioning (WebDAV) disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-76803	IISW-SI-000217	SV-91499r1_rule		Medium

Description
A web server can be installed with functionality that, just by its nature, is not secure. Web Distributed Authoring (WebDAV) is an extension to the HTTP protocol that, when developed, was meant to allow users to create, change, and move documents on a server, typically a web server or web share. Allowing this functionality, development, and deployment is much easier for web authors. WebDAV is not widely used and has serious security concerns because it may allow clients to modify unauthorized files on the web server.

Description

A web server can be installed with functionality that, just by its nature, is not secure. Web Distributed Authoring (WebDAV) is an extension to the HTTP protocol that, when developed, was meant to allow users to create, change, and move documents on a server, typically a web server or web share. Allowing this functionality, development, and deployment is much easier for web authors. WebDAV is not widely used and has serious security concerns because it may allow clients to modify unauthorized files on the web server.

STIG	Date
IIS 8.5 Site Security Technical Implementation Guide	2018-01-03

Details

Check Text ( C-76459r1_chk )
Follow the procedures below for each site hosted on the IIS 8.5 web server: Open the IIS 8.5 Manager. Select the IIS 8.5 website. Review the features listed under the "IIS" section. If the "WebDAV Authoring Rules" icon exists, this is a finding.

Fix Text (F-83499r1_fix)
Follow the procedures below for each site hosted on the IIS 8.5 web server: Access Server Manager on the IIS 8.5 website. Select the Local Server. Click on "Manage". Select "Add Roles and Features". Click "Next" on the "Before you begin" dialog box. Select "Role-based or feature-based installation" on the "Installation Type" dialog box and click on "Next". Select the IIS 8.5 web server on the "Server Selection" dialog box. From the "Windows Features" dialog box, navigate to "World Wide Web Services" >> "Common HTTP Features". De-select "WebDAV Publishing" and click "Next" to complete removing the WebDAV Publishing feature from the IIS 8.5 web server. Select "Apply" from the "Actions" pane.

Fix Text (F-83499r1_fix)

Follow the procedures below for each site hosted on the IIS 8.5 web server:

Access Server Manager on the IIS 8.5 website.

Select the Local Server.

Click on "Manage".

Select "Add Roles and Features".

Click "Next" on the "Before you begin" dialog box.

Select "Role-based or feature-based installation" on the "Installation Type" dialog box and click on "Next".

Select the IIS 8.5 web server on the "Server Selection" dialog box.

From the "Windows Features" dialog box, navigate to "World Wide Web Services" >> "Common HTTP Features".

De-select "WebDAV Publishing" and click "Next" to complete removing the WebDAV Publishing feature from the IIS 8.5 web server.

Select "Apply" from the "Actions" pane.