Ensure tftp server services are not in use

MediaNivel 1Automatizadalinux

Descripción

Trivial File Transfer Protocol (TFTP) is a simple protocol for exchanging files between two TCP/IP machines. TFTP servers allow connections from a TFTP Client for sending and receiving files.

Cómo se verifica

Método de auditoría: Comando de shell

shell

alt0() { command -v rpm >/dev/null 2>&1 || { echo "step1: rpm not installed"; return 1; }; o=$(bash -c 'rpm -q tftp-server' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'package tftp-server is not installed' || { echo step1: missing 'package tftp-server is not installed'; return 1; }; }; alt1() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step1: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled tftp.socket tftp.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 tftp.socket tftp.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

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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

Propiedades

Sistemas operativos: almalinux-8
Etiquetas: cis-convertedlinux
Referencia: CIS AlmaLinux OS 8 Benchmark v4.0.0 - 2.1.17

Verificar este host

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

shell

tmaegis scan --target linux