Ensure the IP Addresses for Listening for Requests Are Specified

FaibleNiveau 2Automatiséeapache

Description

The Apache Listen directive specifies the IP addresses and port numbers the Apache web server will listen for requests. Rather than be unrestricted to listen on all IP addresses available to the system, the specific IP address or addresses intended should be explicitly specified. Specifically, a Listen directive with no IP address specified, or with an IP address of zeros should not be used. Every Listen directive must name a specific IP address (not just a port, *, 0.0.0.0 or [::]). 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.

Méthode de vérification

Méthode d'audit: Commande 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 '/^$/d'); shopt -u nocasematch; printf '%s\n' "$cfg" | awk 'tolower($1)=="listen"{n++; v=$2; if(v~/^[0-9]+$/ || v~/^\*:/ || v~/^0\.0\.0\.0:/ || v~/^\[::\]:/) bad=1} END{print (n>0&&!bad)?"compliant":"noncompliant"}'

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Change each Listen to an explicit address, e.g. Listen 10.20.30.40:80. Then run apachectl configtest and reload Apache.

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: apachenetwork
Référence: CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 5.15 Ensure the IP Addresses for Listening for Requests Are Specified

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target apache --level 2