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TMA-APACHE-3.2

Ensure the Apache User Account Has an Invalid Shell

MediaNivel 1Automatizadaapache

Descripción

The apache account must not be used as a regular login account, and should be assigned an invalid or nologin shell to ensure that the account cannot be used to login. The account named by the User directive must have /sbin/nologin (or /dev/null) as its login shell. Reads the main configuration (APACHE_CONF overrides; default /etc/apache2/apache2.conf, /etc/httpd/conf/httpd.conf or /usr/local/apache2/conf/httpd.conf) and every Include/IncludeOptional file.

Cómo se verifica

Método de auditoría: Comando de shell

shell
c=${APACHE_CONF:-}; if [ -z "$c" ]; then for f in /etc/apache2/apache2.conf /etc/httpd/conf/httpd.conf /usr/local/apache2/conf/httpd.conf /etc/apache2/httpd.conf; do [ -f "$f" ] && { c=$f; break; }; done; fi; [ -r "$c" ] || exit 1; R=$(awk 'tolower($1)=="serverroot"{v=$2; gsub(/"/,"",v); print v; exit}' "$c"); [ -n "$R" ] || R=$(dirname "$c"); shopt -s nocasematch; inc(){ local p g l; [ ${#FUNCNAME[@]} -lt 16 ] || return 0; p=$1; case $p in /*) ;; *) p=$R/$p;; esac; [ -d "$p" ] && p="$p/*"; for g in $p; do [ -f "$g" ] || continue; while IFS= read -r l || [ -n "$l" ]; do if [[ $l =~ ^[[:space:]]*include(optional)?[[:space:]]+\"?([^\"[:space:]]+) ]]; then inc "${BASH_REMATCH[2]}"; else printf '%s\n' "$l"; fi; done < "$g"; done; }; cfg=$(inc "$c" | sed -e 's/^[[:space:]]*//' -e '/^#/d' -e '/^$/d'); shopt -u nocasematch; ev(){ case $1 in '${'*'}') local n=${1#??}; n=${n%?}; local v; v=$(sed -n "s/^[[:space:]]*export[[:space:]]*$n=//p" "${APACHE_ENVVARS:-/etc/apache2/envvars}" 2>/dev/null | tail -n1 | tr -d "\"'"); printf '%s\n' "${v:-$1}";; *) printf '%s\n' "$1";; esac; }; u=$(ev "$(printf '%s\n' "$cfg" | awk 'tolower($1)=="user"{v=$2} END{print v}')"); [ -n "$u" ] && [ "${u#\$}" = "$u" ] || { echo noncompliant; exit 0; }; sh=$(getent passwd "$u" | cut -d: -f7) || exit 1; case "$sh" in */nologin|/dev/null) echo compliant;; *) echo noncompliant;; esac
Salida esperada
compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

chsh -s /sbin/nologin <apache user> (use /usr/sbin/nologin on Debian/Ubuntu).

Propiedades

Sistemas operativos
Cualquiera
Etiquetas
apacheaccounts
Referencia
CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 3.2 Ensure the Apache User Account Has an Invalid Shell

Verificar este host

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

shell
tmaegis scan --target apache