Apache HTTP Server
TMA-APACHE-7.4
Ensure the TLSv1.0 and TLSv1.1 Protocols are Disabled
Descrição
The TLSv1.0 and TLSv1.1 protocols should be disabled via the SSLProtocol directive. The TLSv1.0 protocol is vulnerable to information disclosure and both protocols lack support for modern cryptographic algorithms including authenticated encryption. The only SSL/TLS protocols that should be allowed is TLSv1.2 along with the newer TLSv1.3 protocol. The effective SSLProtocol (last one at server level and in each virtual host) must resolve to TLSv1.2 and/or TLSv1.3 only (e.g. SSLProtocol +TLSv1.2 +TLSv1.3, or all -SSLv3 -TLSv1 -TLSv1.1), and at least one must exist. 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
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 '/^$/d'); shopt -u nocasematch; eff(){ printf '%s\n' "$cfg" | awk -v k="$1" '{l=tolower($0)} l~/^<virtualhost/{vh=1; next} l~/^<\/virtualhost>/{if(v!="") print v; v=""; vh=0; next} tolower($1)==tolower(k){if(vh) v=$0; else g=$0} END{if(g!="") print g}'; }; eff SSLProtocol | awk 'tolower($1)=="sslprotocol"{n++; delete s; for(i=2;i<=NF;i++){t=$i; p=substr(t,1,1); if(p=="+"||p=="-") t=substr(t,2); else delete s; t=tolower(t); if(t=="all"){split("sslv3 tlsv1 tlsv1.1 tlsv1.2 tlsv1.3",z," "); for(j in z) if(p=="-") delete s[z[j]]; else s[z[j]]=1} else if(p=="-") delete s[t]; else s[t]=1} k=0; for(x in s){k++; if(x!="tlsv1.2" && x!="tlsv1.3") bad=1} if(k==0) bad=1} END{print (n>0&&!bad)?"compliant":"noncompliant"}'- Saída esperada
compliant
Como é corrigido
Método de correção: Orientação ou patch de infraestrutura
Set SSLProtocol +TLSv1.2 +TLSv1.3 (or +TLSv1.2) at server level and in every 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 - 7.4 Ensure the TLSv1.0 and TLSv1.1 Protocols are Disabled
Verificar este host
Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.
tmaegis scan --target apache