ICSA-23-220-02
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Published 2023-08-08
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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.
CVEs (2)
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
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RTU500 series CMU
>= 13.3.1 | <= 13.3.2
Affected Sectors
Energy
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