TMA-COS-2.1.3

Ensure NFS and RPC are not enabled

中レベル 1自動cos

説明

The Network File System (NFS) is one of the first and most widely distributed file systems in the UNIX environment. It provides the ability for systems to mount file systems of other servers through the network. If the system does not export NFS shares or act as an NFS client, it is recommended that these services be disabled to reduce the remote attack surface.

チェック方法

監査方法: シェルコマンド

shell

alt0() { command -v systemctl >/dev/null 2>&1 || { echo "step1: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled nfs-server' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- disabled || { echo step1: missing disabled; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step2: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled rpcbind' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- disabled || { echo step2: missing disabled; return 1; }; }; if alt0; then echo compliant; 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

Run the following commands to disable the nfs-server and rpcbind: # systemctl --now disable nfs-server # systemctl --now disable rpcbind /etc is stateless on Container-Optimized OS. Therefore, the steps mentioned above needs to be performed after every boot.

プロパティ

オペレーティングシステム: すべて
タグ: container-optimized-oscos
参照: CIS Google Container-Optimized OS Benchmark v1.2.0 - 2.1.3 Ensure NFS and RPC are not enabled

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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 cos