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The vCenter UI service DefaultServlet must be set to "readonly" for "PUT" and "DELETE" commands.


Finding ID Version Rule ID IA Controls Severity
V-259123 VCUI-80-000130 SV-259123r935273_rule Medium
The default servlet (or DefaultServlet) is a special servlet provided with Tomcat that is called when no other suitable page is found in a particular folder. The DefaultServlet serves static resources as well as directory listings. The DefaultServlet is configured by default with the "readonly" parameter set to "true" where HTTP commands such as "PUT" and "DELETE" are rejected. Changing this to "false" allows clients to delete or modify static resources on the server and to upload new resources. DefaultServlet "readonly" must be set to "true", either literally or by absence (default).
VMware vSphere 8.0 vCenter Appliance User Interface (UI) Security Technical Implementation Guide 2023-10-29


Check Text ( C-62863r935271_chk )
At the command prompt, run the following command:

# xmllint --xpath "//*[contains(text(), 'DefaultServlet')]/parent::*" /usr/lib/vmware-vsphere-ui/server/conf/web.xml

Example output:

File servlet

If the "readOnly" param-value for the "DefaultServlet" servlet class is set to "false", this is a finding.

If the "readOnly" param-value does not exist, this is not a finding.
Fix Text (F-62772r935272_fix)
Navigate to and open:


Navigate to the ///org.apache.catalina.servlets.DefaultServlet/ node and remove the following node:


Restart the service with the following command:

# vmon-cli --restart vsphere-ui