Ensure private key permissions are restricted

TinggiLevel 1Otomatisnginx

Deskripsi

The server's and potentially its vhost's private keys should be protected from unauthorized access by limiting access based on the principle of least privilege. Every ssl_certificate_key and every *.key file under /etc/nginx must have mode 400 or stricter (relative paths are resolved against /etc/nginx; variables and engine: keys are skipped). 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.

Cara pemeriksaan

Metode audit: Perintah shell

shell

out=$(nginx -T 2>/dev/null) || exit 1; { printf '%s\n' "$out" | awk '$1=="ssl_certificate_key"{v=$2; sub(/;$/,"",v); gsub(/["\047]/,"",v); print v}'; find /etc/nginx -name '*.key' 2>/dev/null; } | sort -u | { bad=0; while IFS= read -r k; do case "$k" in data:*|engine:*|store:*|*'$'*) continue;; /*) ;; *) k=/etc/nginx/$k;; esac; [ -e "$k" ] || continue; [ -z "$(find -L "$k" -perm /377)" ] || bad=1; done; [ "$bad" = 0 ] && echo compliant || echo noncompliant; }

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

find /etc/nginx/ -name '*.key' -exec chmod u-wx,go-rwx {} + (and the same for keys stored elsewhere).

Properti

Sistem operasi: Apa saja
Tag: nginxtlspermissions
Referensi: CIS NGINX Benchmark v3.0.0 - 4.1.3 Ensure private key permissions are restricted

Periksa host ini

Jalankan ini pada mesin yang diizinkan untuk Anda audit. Pemindaian bersifat hanya baca.

shell

tmaegis scan --target nginx