Ensure Online Certificate Status Protocol (OCSP) stapling is enabled

中レベル 1自動nginx

説明

OCSP stapling allows a server to efficiently deliver certificate revocation information to the client, improving performance and privacy. The server caches the OCSP response from the Certificate Authority (CA), eliminating the need for the client to make a separate connection. All four directives must be present: ssl_stapling on, ssl_stapling_verify on, ssl_trusted_certificate and resolver. 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.

チェック方法

監査方法: シェルコマンド

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=="ssl_stapling" && a(2)=="on"{s=1} $1=="ssl_stapling_verify" && a(2)=="on"{v=1} $1=="ssl_trusted_certificate"{t=1} $1=="resolver"{r=1} {o=gsub(/\{/,"{"); c=gsub(/\}/,"}"); while(o-->0){sp++; b=$1; sub(/\{.*/,"",b); st[sp]=b} while(c-->0 && sp>0) sp--} END{print (s&&v&&t&&r)?"compliant":"noncompliant"}'

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Add 'ssl_stapling on; ssl_stapling_verify on; ssl_trusted_certificate /etc/nginx/ssl/chain.pem; resolver <dns ip>;' to the HTTPS server blocks. Then run nginx -t and reload nginx.

プロパティ

オペレーティングシステム: すべて
タグ: nginxtls
参照: CIS NGINX Benchmark v3.0.0 - 4.1.7 Ensure Online Certificate Status Protocol (OCSP) stapling is enabled

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target nginx