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TMA-APACHE-3.1

Ensure the Apache Web Server Runs As a Non-Root User

AltaNivel 1Automatizadaapache

Descripción

Although Apache is typically started with root privileges in order to listen on port 80 and 443, it can and should run as another non-root user in order to perform the web services. The Apache User and Group directives are used to designate the user and group that the Apache worker processes will assume. The User directive (Debian ${APACHE_RUN_USER} is resolved from /etc/apache2/envvars) must name a non-root system account with a UID below UID_MIN from /etc/login.defs. 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; }; id=$(id -u "$u" 2>/dev/null) || { echo noncompliant; exit 0; }; mn=$(awk '$1=="UID_MIN"{print $2}' /etc/login.defs 2>/dev/null); [ "$id" != 0 ] && [ "$id" -lt "${mn:-1000}" ] && echo compliant || echo noncompliant
Salida esperada
compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Create a system account (groupadd -r apache; useradd apache -r -g apache -d /var/www -s /sbin/nologin) and set User apache / Group apache in the main configuration. Then run apachectl configtest and reload Apache.

Propiedades

Sistemas operativos
Cualquiera
Etiquetas
apacheaccounts
Referencia
CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 3.1 Ensure the Apache Web Server Runs As a Non-Root User

Verificar este host

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

shell
tmaegis scan --target apache