CVE-2023-46219

Al guardar datos HSTS en un nombre de archivo excesivamente largo, curl podría terminar eliminando todo el contenido, haciendo que las solicitudes posteriores que utilicen ese archivo desconozcan el estado HSTS que de otro modo deberían usar.

A security bypass flaw was found in Curl, which can be triggered by saving HSTS data to an excessively long file name. This issue occurs due to an error in handling HSTS long file names, leading to the removal of all contents from the file during the save process, and may allow a remote attacker to send a specially crafted request to use files without awareness of the HSTS status and enable a Man-in-the-Middle (MitM) attack.

When saving HSTS data to an excessively long file name, curl could end up removing all contents, making subsequent requests using that file unaware of the HSTS status they should otherwise use.

Harry Sintonen discovered that curl incorrectly handled mixed case cookie domains. A remote attacker could possibly use this issue to set cookies that get sent to different and unrelated sites and domains. Maksymilian Arciemowicz discovered that curl incorrectly handled long file names when saving HSTS data. This could result in curl losing HSTS data, and subsequent requests to a site would be done without it, contrary to expectations. This issue only affected Ubuntu 23.04 and Ubuntu 23.10.