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VMware ESXi

TMA-ESXI9-3.8

Host must automatically terminate idle shells

MediaNivel 1Automatizadavmware

Descripción

The host should be configured to automatically terminate idle shell sessions to prevent potential unauthorized access due to forgotten logouts. Setting a timeout for idle SSH connections ensures that any unattended sessions are closed, thereby reducing the security risk. The parameter governing this behavior is UserVars. The audit reads UserVars.ESXiShellInteractiveTimeOut with esxcli and requires 300 seconds or less (0 disables it and fails). Runs in the ESXi Shell (busybox sh) as root.

Cómo se verifica

Método de auditoría: Comando de shell

shell
out=$(esxcli system settings advanced list -o /UserVars/ESXiShellInteractiveTimeOut 2>/dev/null) || exit 1
v=$(printf '%s\n' "$out" | awk '$1=="Int" && $2=="Value:" {print $3; exit}')
case "$v" in ''|*[!0-9-]*) echo '/UserVars/ESXiShellInteractiveTimeOut: no integer value'; exit 1 ;; esac
if [ "$v" -gt 0 ] && [ "$v" -le 300 ]; then echo compliant; else echo "/UserVars/ESXiShellInteractiveTimeOut = $v (expected 1-300)"; fi
Salida esperada
compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To set the timeout to the desired value, perform the following from the vSphere web client: 1. From the vSphere Web Client, select the host. 2. Click Configure then expand System. 3. Select Advanced System Settings then click Edit. 4. Enter ESXiShellInteractiveTimeOut in the filter. 5. Set the value for this parameter is set to the appropriate value (300 seconds or less). 6. Click OK. Note: A value of 0 disables the ESXi ShellInteractiveTimeOut. Alternately, use the following PowerCLI command: # Set Remove UserVars.ESXiShellInteractiveTimeOut to 300 on all hosts Get-VMHost | Get-AdvancedSetting -Name 'UserVars.ESXiShellInteractiveTimeOut' | Set-AdvancedSetting -Value "300"

Propiedades

Sistemas operativos
Cualquiera
Etiquetas
vmwareesximanagement
Referencia
CIS VMware ESXi 9.0 Benchmark v1.0.0 - 3.8 Host must automatically terminate idle shells

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell
tmaegis scan --target vmware