Ensure OCSP Stapling Is Enabled

BaixaNível 2Automatizadaapache

Descrição

The OCSP (Online Certificate Status Protocol) provides the current revocation status of an X.509 certificate and allows for a certificate authority to revoke the validity of a signed certificate before its expiration date. The URI for the OCSP server is included in the certificate and verified by the browser. SSLUseStapling on must be set (no occurrence off) and an SSLStaplingCache must be 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. CIS marks this recommendation Manual; the automated check implements its audit procedure.

Como é verificado

Método de auditoria: Comando 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)=="sslusestapling"{n++; if(tolower($2)!="on") bad=1} tolower($1)=="sslstaplingcache"{c=1} END{print (n>0&&c&&!bad)?"compliant":"noncompliant"}'

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

At server level: SSLStaplingCache "shmcb:logs/ssl_staple_cache(512000)" and SSLUseStapling On (also in each TLS virtual host). Then run apachectl configtest and reload Apache.

Propriedades

Sistemas operacionais: Qualquer
Tags: apachetls
Referência: CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 7.10 Ensure OCSP Stapling Is Enabled

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target apache --level 2