TMA-MYSQL-3.7

Ensure SSL Key Files Have Appropriate Permissions

AltaNivel 1Automatizadamysql

Descripción

When configured to use SSL/TLS, MySQL relies on Secure Sockets Layer (SSL) key files, which are stored on the host's filesystem. These SSL key files are subject to the host's permissions and ownership structure. Every file named by an ssl_ca/ssl_cert/ssl_key/ssl_crl variable must be -r-------- mysql:mysql (directories in ssl_capath/ssl_crlpath are skipped). Runs mysql -NBe with the client defaults: put an administrative account in ~/.my.cnf (mode 0600) or a mysql_config_editor login path, not MYSQL_PWD (see 1.4/1.6).

Cómo se verifica

Método de auditoría: Comando de shell

shell

[ "$(id -u)" -eq 0 ] || exit 1; d=$(mysql -NBe "SELECT @@global.datadir" 2>/dev/null) || exit 1; l=$(mysql -NBe "SELECT VARIABLE_VALUE FROM performance_schema.global_variables WHERE LOWER(VARIABLE_NAME) REGEXP '^.*ssl_(ca|capath|cert|crl|crlpath|key)\$' AND VARIABLE_VALUE <> ''" 2>/dev/null) || exit 1; n=0; for f in $l; do case "$f" in /*) ;; *) f="$d/${f#./}" ;; esac; [ -f "$f" ] || continue; [ "$(stat -c '%a %U %G' "$f")" = "400 mysql mysql" ] || n=$((n+1)); done; [ "$n" -eq 0 ] && echo compliant || echo "$n noncompliant files"

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

chown mysql:mysql <ssl_file> && chmod 400 <ssl_file> for every ssl_ca/ssl_cert/ssl_key/ssl_crl file in use.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: mysqldatabasefilesystempermissionstls
Referencia: CIS Oracle MySQL Community Server 8.4 Benchmark v1.1.0 - 3.7 Ensure SSL Key Files Have Appropriate Permissions

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target mysql