To ensure the security of confidential data in your Drupal site, testing has to be done to determine whether it protects its data and at the same time maintains its functionality. Web applications are always prone to unauthorized access to or modification of sensitive information. The testing done on the applications to remove such anomalies is called security testing.
The following are some of the test cases for assuring the security of a Drupal website
- Test whether captcha is set to assure that the application keeps unauthorized users from accessing the Drupal site.
- Test whether the account should be locked after a determined number of failure attempts.
- Test whether the admin gets alerts or notification when the account is blocked due to failure attempts.
- Test whether security question is asked while creating an account.
- Test whether security question is asked for the password recovery.
- Test when password is encrypted using Secure Socket Layer (SSL) while sending it .
- Test whether system prints password characters while entering passwords.
- Test whether the pages can be accessed by copying and pasting the login URL again without entering the password.
- Test whether the password field support copy operation.
- Test if password field is reset to blank while moving next/back .
- Test whether the password is directly passed through the query string/URL without encryption.
- Test for the access after the session times out. and session time out settings.
- Test whether the system asks for changing the password periodically.
- Test whether the data/pages can be downloaded through FTP or any other source without valid authentication.
- Test whether the secured pages can be accessed through the browser's history.
- Test whether the user can access admin data.
- Test whether the user should be able to access an unauthorized page by copying and pasting the URL.
- Test whether clicking the back arrow should redirect a user to the URL of the last users’ login or their last pages visited.
- Test whether all data input fields must have reasonable field Lengths and specific data types.
- Test the amount of text limit allowed in free form fields.
- Test whether the system accepts illegal characters.
- Test the maximum length in the field.
- Test the minimum length in the field.
- Test the data type.
- Test whether null value is allowed in the field.
- Test the format in the field.
Cross site Scripting
- Test whether the generated pages are properly encoded to prevent unintended execution of scripts.
- Test whether the dynamically generated pages do not contain undesired tags
- Test whether some query inserted in user input fields is being executed by the application.
Improper Error Handling
- Test whether error messages contain only secured information.
- Test the response time for the error messages.
- Test for session hijacking vulnerability, if your application uses session identifier in the URL.
- Test whether information must be protected using strong encryption methods.
Conclusion Security requirement will change with respect to the external environment. Constant review and attention to the threat environment is necessary for maintaining a Drupal application's security. For more information, check Drupal Security Tips.