Ensure private key permissions are restricted

ВысокийУровень 1Автоматическаяnginx

Описание

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.

Как проверяется

Метод проверки: Команда оболочки

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; }

Ожидаемый вывод: compliant

Как исправляется

Метод исправления: Рекомендация или патч инфраструктуры

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

Свойства

Операционные системы: Любая
Теги: nginxtlspermissions
Источник: CIS NGINX Benchmark v3.0.0 - 4.1.3 Ensure private key permissions are restricted

Проверить этот хост

Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.

shell

tmaegis scan --target nginx