CVE-2018-16561

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Las CPU afectadas comprueban incorrectamente los paquetes de comunicaci\u00f3n S7 que podr\u00edan causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) de la CPU. La CPU permanecer\u00e1 en modo DEFECT hasta el reinicio manual. La explotaci\u00f3n con \u00e9xito requiere que un atacante pueda enviar un paquete de comunicaci\u00f3n S7 especialmente creado a una interfaz de comunicaci\u00f3n de la CPU. Esto incluye Ethernet, PROFIBUS y Multi Point Interfaces (MPI). No se requieren interacci\u00f3n ni privilegios del usuario para explotar la vulnerabilidad de seguridad. La vulnerabilidad podr\u00eda causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) de la funcionalidad principal de la CPU, comprometiendo la disponibilidad del sistema. En el momento de la publicaci\u00f3n de asesoramiento, no se conoc\u00eda la explotaci\u00f3n p\u00fablica de esta vulnerabilidad de seguridad. 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