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.

A security flaw has been discovered in Tenda AC18 15.03.05.19(6318). Affected by this issue is some unknown functionality of the file /goform/fast_setting_pppoe_set. Performing a manipulation of the argument Username results in stack-based buffer overflow. The attack is possible to be carried out r…

Multiple endpoints with sensitive information do not require authentication, making the application susceptible to information gathering.

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.

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.

The credentials of the users stored in the system's local database can be used for the log in, making it possible for an attacker to gain unauthorized access. This could potentially affect the confidentiality of the application.