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The ESXi host must automatically stop shell services after 10 minutes.


Overview

Finding ID Version Rule ID IA Controls Severity
V-258756 ESXI-80-000195 SV-258756r933329_rule Medium
Description
When the ESXi Shell or Secure Shell (SSH) services are enabled on a host, they will run indefinitely. To avoid having these services left running, set the "ESXiShellTimeOut". The "ESXiShellTimeOut" defines a window of time after which the ESXi Shell and SSH services will be stopped automatically.
STIG Date
VMware vSphere 8.0 ESXi Security Technical Implementation Guide 2023-10-11

Details

Check Text ( C-62496r933327_chk )
From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> System >> Advanced System Settings.

Select the "UserVars.ESXiShellTimeOut" value and verify it is set to less than "600" and not "0".

or

From a PowerCLI command prompt while connected to the ESXi host, run the following command:

Get-VMHost | Get-AdvancedSetting -Name UserVars.ESXiShellTimeOut

If the "UserVars.ESXiShellTimeOut" setting is set to a value greater than "600" or "0", this is a finding.
Fix Text (F-62405r933328_fix)
From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> System >> Advanced System Settings.

Click "Edit". Select the "UserVars.ESXiShellTimeOut" value and configure 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.ESXiShellTimeOut | Set-AdvancedSetting -Value 600