Siemens SIMATIC NET CP Module Denial of Service Vulnerability

The Communication Processor (CP) modules of the SIMATIC CP 343-1 and CP 443-1 series are designed to support SIMATIC S7-300/S7-400 CPUs for Ethernet communication.SIPLUS Extreme products are designed for reliable operation under extreme conditions and are based on SIMATIC, LOGO! , SIMOTION, SCALANCE, or other devices.A denial-of-service vulnerability exists in the Siemens SIMATIC NET CP module, which can be exploited by an attacker to send constructed packets to port 102/tcp of the affected device potentially resulting in a denial-of-service condition. A reboot is required to restore normal operation.