The IIS 10.0 website must have Web Distributed Authoring and Versioning (WebDAV) disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-218746	IIST-SI-000217	SV-218746r558649_rule		Medium

Description
A web server can be installed with functionality that 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 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
Microsoft IIS 10.0 Site Security Technical Implementation Guide	2021-12-28

Details

Check Text ( C-20219r311136_chk )
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Select the IIS 10.0 website. Review the features listed under the "IIS" section. If the "WebDAV Authoring Rules" icon exists, this is a finding.

Fix Text (F-20217r311137_fix)
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access Server Manager on the IIS 10.0 website. Select the "Local Server". Click "Manage". Select "Add Roles and Features". Click "Next" in the "Before you begin" dialog box. Select "Role-based or feature-based installation" in the "Installation Type" dialog box and click "Next". Select the IIS 10.0 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 10.0 web server. Select "Apply" from the "Actions" pane.

Fix Text (F-20217r311137_fix)

Follow the procedures below for each site hosted on the IIS 10.0 web server:

Access Server Manager on the IIS 10.0 website.

Select the "Local Server".

Click "Manage".

Select "Add Roles and Features".

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

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

Select the IIS 10.0 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 10.0 web server.

Select "Apply" from the "Actions" pane.