Ensure rpcbind services are not in use

中等級 1自動化linux

說明

The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they are listening on and the RPC program numbers they expect to serve. The client system then contacts rpcbind on the server with a particular RPC program number. The rpcbind.service redirects the client to the proper port number so it can communicate with the requested service. Portmapper is an RPC service, which always listens on tcp and udp 111, and is used to map other RPC services (such as nfs, nlockmgr, quotad, mountd, etc.) to their corresponding

檢查方式

稽核方法: Shell 指令

shell

alt0() { command -v rpm >/dev/null 2>&1 || { echo "step1: rpm not installed"; return 1; }; o=$(bash -c 'rpm -q rpcbind' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'package rpcbind is not installed' || { echo step1: missing 'package rpcbind is not installed'; return 1; }; }; alt1() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step1: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled rpcbind.socket rpcbind.service 2>/dev/null | grep '"'"'enabled'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; command -v grep >/dev/null 2>&1 || { echo "step2: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step2: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-active rpcbind.socket rpcbind.service 2>/dev/null | grep '"'"'^active'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step2: $o" | head -c 300; return 1; }; }; if alt0 || alt1; then echo compliant; fi

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

Run the following commands to stop rpcbind.socket and rpcbind.service, and remove the rpcbind package: # systemctl stop rpcbind.socket rpcbind.service # dnf remove rpcbind - OR - - IF - the rpcbind package is required as a dependency: Run the following commands to stop and mask the rpcbind.socket and rpcbind.service: # systemctl stop rpcbind.socket rpcbind.service # systemctl mask rpcbind.socket rpcbind.service

屬性

作業系統: rocky-8
標籤: cis-convertedlinux
參考資料: CIS Rocky Linux 8 Benchmark v3.0.0 - 2.1.12

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請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target linux