CVE-2020-4042

Bareos before version 19.2.8 and earlier allows a malicious client to communicate with the director without knowledge of the shared secret if the director allows client initiated connection and connects to the client itself. The malicious client can replay the Bareos director's cram-md5 challenge to the director itself leading to the director responding to the replayed challenge. The response obtained is then a valid reply to the directors original challenge. This is fixed in version 19.2.8.

Bareos before version 19.2.8 and earlier allows a malicious client to communicate with the director without knowledge of the shared secret if the director allows client initiated connection and connects to the client itself. The malicious client can replay the Bareos director's cram-md5 challenge to the director itself leading to the director responding to the replayed challenge. The response obtained is then a valid reply to the directors original challenge. This is fixed in version 19.2.8.

Bareos versiones anteriores a 19.2.8 y anteriores, permite a un cliente malicioso comunicarse con el director sin conocer el secreto compartido si el director permite la conexión iniciada por el cliente y conecta con el cliente mismo. El cliente malicioso puede reproducir el desafío cram-md5 del director de Bareos al director mismo, conduciendo al director a responder al desafío reproducido. La respuesta obtenida es entonces una respuesta válida al desafío original de los directores. Esto es corregido en la versión 19.2.8