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ICSA-23-220-02  ·  Published 2023-08-08  ·  View on CISA ICS-CERT ↗

Hitachi Energy RTU500 series

CVSS 7.5 HIGH

Risk Summary

Successful exploitation of these vulnerabilities could cause a buffer overflow and reboot of the product.

Remediations

  • Hitachi Energy recommends users update to CMU Firmware versions 13.3.3 or 13.4.1.
  • The reported vulnerabilities affect only the RTU500 series with HCI IEC 60870-5-104 and IEC62351-5 or IEC 62351-5 configured and enabled. A possible mitigation is to disable the HCI IEC 60870-5-104 function or its IEC 62351-3 and IEC 62351-5 features if they are not used. By default, the HCI IEC 60870-5-104 and its IEC 62351-3 or IEC 62351-5 support are disabled.
  • Hitachi Energy recommends the following general mitigations:
  • Recommended security practices and firewall configurations can help protect a process control network from attacks originating from outside the network.
  • Physically protect process control systems from direct access by unauthorized personnel.
  • Ensure process control systems have no direct connections to the internet and are separated from other networks via a firewall system with minimal exposed ports.
  • Do not use process control systems for internet surfing, instant messaging, or receiving emails.
  • Scan portable computers and removable storage media for malware prior connection to a control system.
  • Enforce proper password policies and processes.
  • For more information, see Hitachi Energy's Security Advisory: 8DBD000121.

Affected Vendors

Hitachi Energy

Affected Products (1)

Hitachi Energy · RTU500 series CMU >= 13.3.1 | <= 13.3.2

Affected Sectors

Energy

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