CVE-2023-5768

Summary

CVE-2023-5768 is a vulnerability affecting the HCI IEC 60870-5-104 communication protocol in the RTU500 series products. Incomplete or incorrectly formatted Advanced Program-to-Device (APDU) frames can cause blocking on the link layer. This results in endless blocking when reading incoming frames with incorrect length information or delayed data octets. The communication link is the only component affected, and once the attack sequence is stopped, the previously blocked link resumes normal function.

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