Beta - SQL DB Instance With Unrecommended Logging Threshold

• Query id: ecbbe763-95dc-47e6-8660-84ff751e5acf
• Query name: Beta - SQL DB Instance With Unrecommended Logging Threshold
• Platform: Terraform
• Severity: Low
• Category: Observability
• CWE: 779
• Risk score: 1.0
• URL: Github

Description

All 'google_sql_database_instance' resources based on POSTGRES should have the 'log_min_messages' flag set to 'WARNING' or a higher severity to prevent excessive logging
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

resource "google_sql_database_instance" "positive_1" {
  name             = "postgres-instance-with-flag"
  database_version = "POSTGRES_14"
  region           = "us-central1"

  settings {
    database_flags {
      name = "sample_flag1"
      value = "off"
      }

    database_flags {
      name = "log_min_messages"
      value = "NOTICE"
      } # Flag is set to "NOTICE"

    database_flags {
      name = "sample_flag2"
      value = "off"
      }
  }
}

resource "google_sql_database_instance" "positive_2" {
  name             = "postgres-instance-with-flag"
  database_version = "POSTGRES_13"
  region           = "us-central1"

  settings {
    database_flags {
      name = "log_min_messages"
      value = "DEBUG5"
    }  # Flag is set to "DEBUG5"
  }
}

resource "google_sql_database_instance" "positive_3" {
  name             = "postgres-instance-with-flag"
  database_version = "POSTGRES_13"
  region           = "us-central1"

  settings {
    database_flags {
      name = "log_min_messages"
      value = "INFO"
      }  # Flag is set to "INFO"
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

resource "google_sql_database_instance" "negative_1" {
  name             = "main-instance"
  database_version = "MYSQL_8_0"      # Is not a POSTGRES instance
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
      name = "log_min_messages"
      value = "DEBUG3"
    }
  }
}

resource "google_sql_database_instance" "negative_2" {
  name             = "mysql-instance-without-flag"
  database_version = "POSTGRES_17"
  region           = "us-central1"

  # Defaults to "ERROR"
}

resource "google_sql_database_instance" "negative_3" {
  name             = "postgres-instance-without-flag"
  database_version = "POSTGRES_16"
  region           = "us-central1"

  settings {}  # Defaults to "ERROR"
}

resource "google_sql_database_instance" "negative_4" {
  name             = "postgres-instance-without-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    database_flags {
      name = "sample_flag1"
      value = "DEBUG3"
    }
      # Defaults to "ERROR"
  }
}

resource "google_sql_database_instance" "negative_5" {
  name             = "mysql-instance-with-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
       name = "sample_flag1"
       value = "off"
      }

    database_flags {
       name = "log_min_messages"
       value = "FATAL"
      }   # Has flag set to "FATAL"

    database_flags {
       name = "sample_flag2"
       value = "off"
      }
  }
}

resource "google_sql_database_instance" "negative_6" {
  name             = "mysql-instance-with-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
       name = "log_min_messages"
       value = "ERROR"
      }   # Has flag set to "ERROR"
  }
}

resource "google_sql_database_instance" "negative_7" {
  name             = "mysql-instance-with-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
       name = "log_min_messages"
       value = "LOG"
      }   # Has flag set to "LOG"
  }
}

resource "google_sql_database_instance" "negative_8" {
  name             = "mysql-instance-with-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
       name = "log_min_messages"
       value = "WARNING"
       }   # Has flag set to "WARNING" (minimum)
  }
}

resource "google_sql_database_instance" "negative_9" {
  name             = "mysql-instance-with-flag"
  database_version = "POSTGRES_15"
  region           = "us-central1"

  settings {
    tier = "db-f1-micro"

    database_flags {
       name = "log_min_messages"
       value = "PANIC"
       }   # Has flag set to "PANIC"
  }
}