Potentially sensitive data stored in "default" value of variable.

Explanation

Sensitive attributes such as passwords and API tokens should not be available in your templates, especially in a plaintext form. You can declare variables to hold the secrets, assuming you can provide values for those variables in a secure fashion. Alternatively, you can store these secrets in a secure secret store, such as AWS KMS.

NOTE: It is also recommended to store your Terraform state in an encrypted form.

Possible Impact

Default values could be exposing sensitive data

Suggested Resolution

Don’t include sensitive data in variable defaults

Insecure Example

The following example will fail the general-secrets-sensitive-in-variable check.

variable "password" {
  description = "The root password for our VM"
  type        = string
  default     = "p4ssw0rd"
}

resource "evil_corp" "virtual_machine" {
	root_password = var.password
}

Secure Example

The following example will pass the general-secrets-sensitive-in-variable check.

variable "password" {
  description = "The root password for our VM"
  type        = string
}

resource "evil_corp" "virtual_machine" {
	root_password = var.password
}

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