What is the vulnerability ID for this vulnerability?

The vulnerability ID is CVE-2021-35533.

What is the severity of CVE-2021-35533?

The severity of CVE-2021-35533 is high with a severity value of 7.5.

Which software versions are affected by CVE-2021-35533?

The affected software versions are 12.0, 12.2, and 12.4 of Hitachi Energy RTU500 firmware.

How does CVE-2021-35533 affect Hitachi Energy RTU500 CMU?

CVE-2021-35533 allows an attacker to cause the receiving RTU500 CMU to reboot when receiving a specially crafted message.

How can I fix CVE-2021-35533?

To fix CVE-2021-35533, update the Hitachi Energy RTU500 firmware to a version that is not vulnerable.

Vulnerability/
CVE-2021-35533

high

7.5

CWE

26/11/2021

16/9/2024

CVE-2021-35533: Specially Crafted IEC 60870-5-104 Packet Vulnerability in RTU500 series

First published: Fri Nov 26 2021(Updated: )

Improper Input Validation vulnerability in the APDU parser in the Bidirectional Communication Interface (BCI) IEC 60870-5-104 function of Hitachi Energy RTU500 series allows an attacker to cause the receiving RTU500 CMU of which the BCI is enabled to reboot when receiving a specially crafted message. By default, BCI IEC 60870-5-104 function is disabled (not configured). This issue affects: Hitachi Energy RTU500 series CMU Firmware version 12.0.* (all versions); CMU Firmware version 12.2.* (all versions); CMU Firmware version 12.4.* (all versions).

Credit: cybersecurity@hitachienergy.com

Affected Software	Affected Version	How to fix
Hitachienergy Rtu500 Firmware	=12.0
Hitachienergy Rtu500 Firmware	=12.2
Hitachienergy Rtu500 Firmware	=12.4
Hitachienergy Rtu500

Remedy

- Disable BCI IEC 60870-5-104 function by configuration if it is not used. - Update to RTU500 series CMU Firmware version 12.6.5.0 or later (e.g., RTU500 CMU Firmware version 12.7.* or CMU Firmware version 13.2.* or later).

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Reference Links

https://search.abb.com/library/Download.aspx?DocumentID=8DBD000063&LanguageCode=en&DocumentPartId=&Action=Launch

Frequently Asked Questions

What is the vulnerability ID for this vulnerability?
The vulnerability ID is CVE-2021-35533.
What is the severity of CVE-2021-35533?
The severity of CVE-2021-35533 is high with a severity value of 7.5.
Which software versions are affected by CVE-2021-35533?
The affected software versions are 12.0, 12.2, and 12.4 of Hitachi Energy RTU500 firmware.
How does CVE-2021-35533 affect Hitachi Energy RTU500 CMU?
CVE-2021-35533 allows an attacker to cause the receiving RTU500 CMU to reboot when receiving a specially crafted message.
How can I fix CVE-2021-35533?
To fix CVE-2021-35533, update the Hitachi Energy RTU500 firmware to a version that is not vulnerable.

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agent/last-modified-date
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agent/softwarecombine
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vendor/hitachienergy
canonical/hitachienergy rtu500 firmware
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version/hitachienergy rtu500 firmware/12.4
canonical/hitachienergy rtu500

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