The ESXi host client must be configured with an idle session timeout.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258731 | ESXI-80-000010 | SV-258731r933254_rule | CCI-000057 | medium |
| Description | ||||
| The ESXi host client is the UI served up by the host itself, outside of vCenter. It is accessed at 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 8.0 ESXi Security Technical Implementation Guide | 2023-10-11 | |||
Details
Check Text (C-258731r933254_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 "900" or less.
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 "900" or less, this is a finding.
Fix Text (F-62380r933253_fix)
From the vSphere Client, go to Hosts and Clusters.
Select the ESXi Host >> Configure >> System >> Advanced System Settings.
Click "Edit". Select the "UserVars.HostClientSessionTimeout" value and configure it to "900".
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 "900"