The ESXi Host Client must be configured with a session timeout.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256441 | ESXI-70-000089 | SV-256441r959010_rule | CCI-000366 | medium |
| Description | ||||
| The ESXi Host Client is the UI served up by the host itself, outside of vCenter. It is accessed by browsing to "https://<ESX FQDN>/ui". ESXi is not usually administered via this interface for long periods, and all users will be highly privileged. Implementing a mandatory session idle limit will ensure that orphaned, forgotten, or ignored sessions will be closed promptly. | ||||
| STIG | Date | |||
| VMware vSphere 7.0 ESXi Security Technical Implementation Guide | 2025-02-11 | |||
Details
Check Text (C-256441r959010_chk)
From the vSphere Client, go to Hosts and Clusters.
Select the ESXi Host >> Configure >> System >> Advanced System Settings.
Select the "UserVars.HostClientSessionTimeout" value and verify it is set to "600".
or
From a PowerCLI command prompt while connected to the ESXi host, run the following command:
Get-VMHost | Get-AdvancedSetting -Name UserVars.HostClientSessionTimeout
If the "UserVars.HostClientSessionTimeout" setting is not set to "600", this is a finding.
Fix Text (F-60059r886103_fix)
From the vSphere Client, go to Hosts and Clusters.
Select the ESXi Host >> Configure >> System >> Advanced System Settings.
Select the "UserVars.HostClientSessionTimeout" value and set it to "600".
or
From a PowerCLI command prompt while connected to the ESXi host, run the following command:
Get-VMHost | Get-AdvancedSetting -Name UserVars.HostClientSessionTimeout | Set-AdvancedSetting -Value "600"