Vulnerabilidades

The application does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it possible for an attacker to guess user credentials.

For failed login attempts, the application returns different error messages depending on whether the login failed due to an incorrect password or a non-existing username. This allows an attacker to guess usernames until they find an existing one.

In the HTTP request, the username and password are transferred directly in the URL as parameters. However, URLs can be stored in various systems such as server logs, browser histories or proxy servers. As a result, there is a high risk that this sensitive data will be disclosed unintentionally.

The application provides access to a login protected H2 database for caching purposes. The username is prefilled.

If a user tries to login but the provided credentials are incorrect a log is created. The data for this POST requests is not validated and it’s possible to send giant payloads which are then logged.

When an error occurs in the application a full stacktrace is provided to the user. The stacktrace lists class and method names as well as other internal information. An attacker can thus obtain information about the technology used and the structure of the application.

An API endpoint allows arbitrary log entries to be created via POST request. Without sufficient validation of the input data, an attacker can create manipulated log entries and thus falsify or dilute logs, for example.

Due to a lack of authentication, it is possible for an unauthenticated user to request data from this endpoint, making the application vulnerable for user enumeration.

A user with the appropriate authorization can create any number of user accounts via an API endpoint using a POST request. There are no quotas, checking mechanisms or restrictions to limit the creation.

A remote unauthorized attacker may gather sensitive information of the application, due to missing authorization of configuration settings of the product.