Buffer Overflow in RTU500 Series by Hitachi Energy

CVE-2022-2502

Summary

A buffer overflow vulnerability exists in the HCI IEC 60870-5-104 functionality within certain RTU500 series devices. This vulnerability arises when the HCI is configured to support IEC 62351-5, and the CMU is equipped with the ‘Advanced security’ license. If these conditions are met, an attacker could exploit the vulnerability by sending crafted messages to the RTU500, potentially leading to a restart of the RTU500 CMU. The underlying cause is a lack of input data validation which can result in an internal buffer overflow.

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