Details

When the Direct console user interface (DCUI) is enabled and logged in it should be automatically logged out if left logged in to avoid unauthorized privilege gains. The DcuiTimeOut defines a window of time after which the DCUI will be logged out.

Solution

From the vSphere Client select the ESXi Host and go to Configuration >> Advanced Settings. Select the UserVars.DcuiTimeOut value and configure it to 600.

or

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

Get-VMHost | Get-AdvancedSetting -Name UserVars.DcuiTimeOut | Set-AdvancedSetting -Value 600

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMware_vSphere_6-0_ESXi_V1R5_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system VMware.

References

• 800-53|SC-10
• CAT|II
• CCI|CCI-001133
• Group-ID|V-63255
• Rule-ID|SV-77745r1_rule
• STIG-ID|ESXI-06-000043
• Vuln-ID|V-63255

Source

• Tenable.com/audits