Ensure Browser Framing Is Restricted

FaibleNiveau 2Automatiséeapache

Description

To prevent Clickjacking or UI Redressing attacks, it's important for the server to include an HTTP header which instructs browsers to restrict the content from being framed. There are two headers that may be used. The Content-Security-Policy header, or the X- Frame-Options header. The Header directive allows server HTTP response headers to be added, replaced or merged. Compliant when a Header always set/append Content-Security-Policy with frame-ancestors 'none' or 'self', or a Header always set/append X-Frame-Options SAMEORIGIN/DENY, is configured. 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 '{l=tolower($0)} l~/^header[[:space:]]+always[[:space:]]+(set|append)[[:space:]]+"?content-security-policy/ && l~/frame-ancestors[[:space:]]+\047?(none|self)/{ok=1} l~/^header[[:space:]]+always[[:space:]]+(set|append)[[:space:]]+"?x-frame-options"?[[:space:]]+"?(sameorigin|deny)/{ok=1} END{print ok?"compliant":"noncompliant"}'

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Header always append Content-Security-Policy "frame-ancestors 'self'" Then run apachectl configtest and reload Apache.

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: apacheheaders
Référence: CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 5.16 Ensure Browser Framing Is Restricted

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