CVE-2015-1843

El paquete Red Hat docker anterior a 1.5.0-28, cuando utiliza la opción --add-registry, vuelve a HTTP cuando falla la conexión HTTPS al registro, lo que permite a atacantes man-in-the-middle realizar ataques de degradación y obtener la autenticación y datos de imágenes mediante el aprovechamiento de una posición de la red entre el cliente y el registro para bloquear el trafico HTTPS. NOTA: esta vulnerabilidad existe debido a una regresión de CVE-2014-5277.

It was found that the fix for the CVE-2014-5277 issue was incomplete: the docker client could under certain circumstances erroneously fall back to HTTP when an HTTPS connection to a registry failed. This could allow a man-in-the-middle attacker to obtain authentication and image data from traffic sent from a client to the registry.

Docker is a service providing container management on Linux. It was found that the fix for the CVE-2014-5277 issue was incomplete: the docker client could under certain circumstances erroneously fall back to HTTP when an HTTPS connection to a registry failed. This could allow a man-in-the-middle attacker to obtain authentication and image data from traffic sent from a client to the registry.