Host must automatically deactivate shell services

中レベル 1自動vmware

説明

Enabling the automatic deactivation of shell services minimizes the attack surface on the host. The time window for the ESXi Shell and SSH services' availability is defined by UserVars.ESXiShellTimeOut, after which these services are terminated. The recommended setting for this parameter is 3600. The audit reads UserVars.ESXiShellTimeOut with esxcli and requires 3600 seconds or less (0 disables it and fails). Runs in the ESXi Shell (busybox sh) as root.

チェック方法

監査方法: シェルコマンド

shell

out=$(esxcli system settings advanced list -o /UserVars/ESXiShellTimeOut 2>/dev/null) || exit 1
v=$(printf '%s\n' "$out" | awk '$1=="Int" && $2=="Value:" {print $3; exit}')
case "$v" in ''|*[!0-9-]*) echo '/UserVars/ESXiShellTimeOut: no integer value'; exit 1 ;; esac
if [ "$v" -gt 0 ] && [ "$v" -le 3600 ]; then echo compliant; else echo "/UserVars/ESXiShellTimeOut = $v (expected 1-3600)"; fi

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

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 ESXiShellTimeOut in the filter. 5. Set the value for this parameter is set to 3600 (1 hour) or less 6. Click OK. Note: A value of 0 disables the ESXiShellTimeOut. Alternately, run the following PowerCLI command: # Set UserVars.ESXiShellTimeOut to 3600 on all hosts Get-VMHost | Get-AdvancedSetting -Name 'UserVars.ESXiShellTimeOut' | Set- AdvancedSetting -Value "3600"

プロパティ

オペレーティングシステム: すべて
タグ: vmwareesximanagement
参照: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 3.9 Host must automatically deactivate shell services

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監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target vmware