Ensure rpcbind services are not in use

SedangLevel 1Otomatislinux

Deskripsi

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

Cara pemeriksaan

Metode audit: Perintah shell

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

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

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

Properti

Sistem operasi: rhel-10
Tag: cis-convertedlinux
Referensi: CIS Red Hat Enterprise Linux 10 Benchmark v1.0.1 - 2.1.11

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shell

tmaegis scan --target linux