Ensure 'Log_min_error_statement' Database Flag for Cloud SQL PostgreSQL Instance Is Set to 'Error' or Stricter

The 'log_min_error_statement' flag defines the minimum message severity level that are considered as an error statement. Messages for error statements are logged with the SQL statement. Valid values include DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR, LOG, FATAL, and PANIC. Each severity level includes the subsequent levels mentioned above. Ensure a value of 'ERROR' or stricter is set.

Risk Level: Low
Cloud Entity: GCP CloudSql
CloudGuard Rule ID: D9.GCP.LOG.17
Covered by Spectral: Yes
Category: Database

GSL LOGIC

CloudSql where databaseVersion like 'POSTGRES%' should have settings.databaseFlags contain [ name like 'log_min_error_statement' and value in('debug5','debug4','debug3','debug2','debug1','info','notice','warning','error')]

REMEDIATION

From Portal

  1. Go to https://console.cloud.google.com/sql/instances and navigate to the instance where the flag needs to be set
  2. Click Edit Configurations
  3. Under flags section, choose add flag, look for log_min_error_statement and choose value - 'ERROR' or stricter.
  4. Save and review your changes

From TF
Set the flag 'log_min_error_statement' to 'error' or stricter.:

resource 'google_sql_database_instance' 'default' {
	...
	settings {
		database_flags {
			name  = 'log_min_error_statement'
			value =  'error' OR stricter
		}
	}
}

From Command Line

  1. First retrieve all existing flags values:
gcloud sql instances describe INSTANCE_NAME
  1. Add all existing flags and their value to the patch request - otherwise they will get set to their default value.
gcloud sql instances patch INSTANCE_NAME --database-flags (ExistingFlag1=Value1,ExistingFlag2=Value2,...),log_min_error_statement= 'error' OR stricter

References

  1. https://cloud.google.com/sql/docs/postgres/flags
  2. https://www.postgresql.org/docs/9.6/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHEN

GCP CloudSql

Cloud SQL is a fully managed database service that makes it easy to set up, maintain, manage, and administer your relational PostgreSQL, MySQL, and SQL Server databases in the cloud.

Compliance Frameworks

  • CloudGuard GCP All Rules Ruleset
  • GCP CIS Controls V 8
  • GCP CIS Foundations v. 1.2.0
  • GCP CIS Foundations v. 1.3.0
  • GCP CIS Foundations v. 2.0
  • GCP CloudGuard Best Practices
  • GCP MITRE ATT&CK Framework v12.1
  • GCP NIST 800-53 Rev 5