RDS instance SSL action disabled

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Metadata

Id: terraform-alicloud-rds-instance-ssl-action-disabled

Provider: Alicloud

Platform: Terraform

Severity: Medium

Category: Networking and Firewall

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Description

The ssl_action parameter must be set to Open for alicloud_db_instance resources. This rule flags instances where ssl_action is set to Close or is not defined. Setting ssl_action = "Open" enforces SSL/TLS for database connections; leaving it unset or set to Close may expose data in transit.

Compliant Code Examples

resource "alicloud_db_instance" "default" {
    engine = "MySQL"
    engine_version = "5.6"
    db_instance_class = "rds.mysql.t1.small"
    db_instance_storage = "10"
    ssl_action = "Open"
    parameters = [{
        name = "innodb_large_prefix"
        value = "ON"
    },{
        name = "connect_timeout"
        value = "50"
    }]
}

resource "alicloud_db_instance" "default" {
    engine = "MySQL"
    engine_version = "5.6"
    db_instance_class = "rds.mysql.t1.small"
    db_instance_storage = "10"
    ssl_action = "Update"
    parameters = [{
        name = "innodb_large_prefix"
        value = "ON"
    },{
        name = "connect_timeout"
        value = "50"
    }]
}

Non-Compliant Code Examples

resource "alicloud_db_instance" "default" {
    engine = "MySQL"
    engine_version = "5.6"
    db_instance_class = "rds.mysql.t1.small"
    db_instance_storage = "10"
    ssl_action = "Close"
    parameters = [{
        name = "innodb_large_prefix"
        value = "ON"
    },{
        name = "connect_timeout"
        value = "50"
    }]
}

resource "alicloud_db_instance" "default" {
    engine = "MySQL"
    engine_version = "5.6"
    db_instance_class = "rds.mysql.t1.small"
    db_instance_storage = "10"
    parameters = [{
        name = "innodb_large_prefix"
        value = "ON"
    },{
        name = "connect_timeout"
        value = "50"
    }]
}