The vSphere Client (H5 client) shows error stack traces

Products

• VMware vSphere ESXi

Issue/Introduction

• This article provides information to customers with very security sensitive environments in which the returned stack traces might be an issue.
  
  
• HTTP requests that have hit an error during processing return a stack trace.

Environment

• VMware vCenter Server

Cause

This issue occurs due to the default mode of the H5 client which was to return the stack traces for debug purposes.

Resolution

Update error.stackTrace.show=false in the webclient.properties file.

1. SSH to the vCenter with root user
2. Navigate to the folder /etc/vmware/vsphere-ui/
   

   cd /etc/vmware/vsphere-ui/

3. Edit the file webclient.properties using the below vi command in this path: -
   

   vi webclient.properties

4. Go to the end of the file add the below line 
   

   "error.stackTrace.show = false"

5. Save and Exit

   Esc > :wq!

6. Restart the vsphere-ui service using the below command.
   

   service-control --restart vsphere-ui