var-201611-0393
Vulnerability from variot

Siemens SIMATIC S7-300, 1200, 1500 CPU is a modular universal controller for the manufacturing industry of Siemens, Germany. It is widely used in important industrial control sites such as tobacco, petrochemical and water.

A denial of service vulnerability exists in the Siemens SIMATIC S7-300/1200/1500 CPU. Since the Siemens S7-300, 1200, and 1500 CPUs refuse service when communicating with the ProfinetIO Layer 2 network packet of a specific configuration, the CPU enters the failure mode and needs to be manually restarted for recovery. The attacker exploits the vulnerability to directly obtain the target information through the secondary MAC broadcast to initiate a denial of service attack

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