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A vulnerability has been identified in Firmware variant IEC 61850 for EN100 Ethernet module (All versions < V4.35), Firmware variant MODBUS TCP for EN100 Ethernet module (All versions), Firmware variant DNP3 TCP for EN100 Ethernet module (All versions), Firmware variant IEC104 for EN100 Ethernet module (All versions), Firmware variant Profinet IO for EN100 Ethernet module (All versions), SIPROTEC 5 relays with CPU variants CP300 and CP100 and the respective Ethernet communication modules (All versions < V7.82), SIPROTEC 5 relays with CPU variants CP200 and the respective Ethernet communication modules (All versions < V7.58). Specially crafted packets to port 102/tcp could cause a denial-of-service condition in the affected products. A manual restart is required to recover the EN100 module functionality of the affected devices. Successful exploitation requires an attacker with network access to send multiple packets to the affected products or modules. As a precondition the IEC 61850-MMS communication needs to be activated on the affected products or modules. No user interaction or privileges are required to exploit the vulnerability. The vulnerability could allow causing a Denial-of-Service condition of the network functionality of the device, compromising the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

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Siemens EN100 Ethernet Communication module和SIPROTEC 5 Relays 安全漏洞

Siemens EN100 Ethernet Communication module和SIPROTEC 5 Relays中存在安全漏洞。攻击者可通过向受影响设备或模块发送多个数据包利用该漏洞造成拒绝服务。以下产品和版本受到影响：Siemens IEC 61850 for EN100 Ethernet module 4.35之前版本；MODBUS TCP for EN100 Ethernet module（所有版本）；DNP3 TCP for EN100 Ethernet module（所有版本）；IEC

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