Ensure 'password_encryption' is set to 'scram-sha-256'

MediaNivel 1Automatizadapostgres

Descripción

New passwords should be stored as SCRAM-SHA-256 verifiers rather than MD5 hashes (MD5 support is deprecated in PostgreSQL 18). Not a separate CIS PostgreSQL 18 recommendation (see the 5.4 default-value notes). Runs psql as ${PGUSER:-postgres} against ${PGDATABASE:-postgres}; set PGHOST/PGPORT and use ~/.pgpass (not PGPASSWORD, see 1.6/1.7) when peer authentication is not available.

Cómo se verifica

Método de auditoría: Consulta SQL

sql_query

out=$(psql -X -U "${PGUSER:-postgres}" -d "${PGDATABASE:-postgres}" -tAc "SHOW password_encryption" 2>/dev/null) || exit 1; printf '%s\n' "$out"

Salida esperada: scram-sha-256

Cómo se corrige

Método de corrección: Sentencia SQL

shell

psql -X -U "${PGUSER:-postgres}" -c "ALTER SYSTEM SET password_encryption = 'scram-sha-256'" -c "SELECT pg_reload_conf()"

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: postgresdatabaseauthenticationpassword
Referencia: CIS PostgreSQL 18 Benchmark v1.0.0 - 5.4 Ensure login via "host" TCP/IP Socket is configured correctly (default value notes on password_encryption)

Verificar este host

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

shell

tmaegis scan --target postgres