Ensure HTTP Strict Transport Security (HSTS) is enabled

MittelStufe 1Automatisiertnginx

Beschreibung

HTTP Strict Transport Security (HSTS) is a critical security header that instructs browsers to communicate with a domain exclusively over HTTPS. A comprehensive HSTS policy must include the includeSubDomains directive to apply the policy to all current and future subdomains. For maximum protection, the policy should also contain the preload directive, allowing the domain to be submitted to browser-pre-load lists. Every Strict-Transport-Security add_header must have max-age of at least 31536000, includeSubDomains and the always parameter. Evaluated on the merged configuration printed by `nginx -T` (all included files; needs permission to read them). CIS marks this recommendation Manual; the automated check implements its audit procedure.

So wird geprüft

Prüfmethode: Shell-Befehl

shell

out=$(nginx -T 2>/dev/null) || exit 1; printf '%s\n' "$out" | awk '{l=$0; o=""; q=""; for(i=1;i<=length(l);i++){c=substr(l,i,1); if(q!=""){o=o c; if(c==q) q=""; continue} if(c=="\""||c=="\047"){q=c; o=o c; continue} if(c=="#") break; if(c==";"||c=="{"){print o c; o=""; continue} if(c=="}"){if(o~/[^[:space:]]/) print o; print "}"; o=""; continue} o=o c} if(o~/[^[:space:]]/) print o}' | awk 'function a(i,  x){x=$i; sub(/;$/,"",x); gsub(/["\047]/,"",x); return x} function inb(n,  i){for(i=1;i<=sp;i++) if(st[i]==n) return 1; return 0} $1=="add_header" && tolower(a(2))=="strict-transport-security"{n++; l=tolower($0); m=0; if(match(l,/max-age=[0-9]+/)) m=substr(l,RSTART+8,RLENGTH-8)+0; if(m>=31536000 && l~/includesubdomains/ && a(NF)=="always") ok++} {o=gsub(/\{/,"{"); c=gsub(/\}/,"}"); while(o-->0){sp++; b=$1; sub(/\{.*/,"",b); st[sp]=b} while(c-->0 && sp>0) sp--} END{print (n>0&&ok==n)?"compliant":"noncompliant"}'

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always; Then run nginx -t and reload nginx.

Eigenschaften

Betriebssysteme: Beliebig
Tags: nginxtls
Referenz: CIS NGINX Benchmark v3.0.0 - 4.1.8 Ensure HTTP Strict Transport Security (HSTS) is enabled

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shell

tmaegis scan --target nginx