Password authentication in use instead of SSH keys.

Explanation

Access to instances should be authenticated using SSH keys. Removing the option of password authentication enforces more secure methods while removing the risks inherent with passwords.

Possible Impact

Passwords are potentially easier to compromise than SSH Keys

Suggested Resolution

Use SSH keys for authentication

Insecure Example

The following example will fail the azure-compute-ssh-authentication check.

resource "azurerm_virtual_machine" "bad_example" {
	os_profile_linux_config {
		disable_password_authentication = false
	}
}

Secure Example

The following example will pass the azure-compute-ssh-authentication check.

resource "azurerm_virtual_machine" "good_example" {
	os_profile_linux_config {
		disable_password_authentication = true
	}
}

Getting Started
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