CVE-2017-13833

Se ha descubierto un problema en algunos productos Apple. Las versiones de macOS anteriores a la 10.13.1 se han visto afectadas. El problema afecta al componente "CFNetwork". Permite a los atacantes ejecutar código arbitrario en un contexto privilegiado o provocar una denegación de servicio (corrupción de memoria) mediante una app manipulada.

This vulnerability allows local attackers to escalate privileges on vulnerable installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the nsurlstoraged service. The issue results from the lack of proper validation of a reference count, which can result in an integer overflow when incrementing it. An attacker can leverage this vulnerability to escalate privileges under the context of the current service.