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V-256791

CAT II (Medium)

vSphere UI must not have the Web Distributed Authoring (WebDAV) servlet installed.

Rule ID

SV-256791r889372_rule

STIG

VMware vSphere 7.0 vCenter Appliance UI Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-000381

Discussion

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. WebDAV is not widely used and has serious security concerns because it may allow clients to modify unauthorized files on the web server and must therefore be disabled. Tomcat uses the "org.apache.catalina.servlets.WebdavServlet" servlet to provide WebDAV services. Because the WebDAV service has been found to have an excessive number of vulnerabilities, this servlet must not be installed. vSphere UI does not configure WebDAV by default.

Check Content

At the command prompt, run the following command:  
 
# grep -n 'webdav' /usr/lib/vmware-vsphere-ui/server/conf/web.xml 
 
If the command produces any output, this is a finding.

Fix Text

Navigate to and open: 
 
/usr/lib/vmware-vsphere-ui/server/conf/web.xml. 
 
Find the <servlet-name>webdav</servlet-name> node and remove the entire parent <servlet> block. 
 
Find the <servlet-name>webdav</servlet-name> node and remove the entire parent <servlet-mapping> block. 
 
Restart the service with the following command: 
 
# vmon-cli --restart vsphere-ui