CVE-2023-27396: omron corporation multiple omron products which implement fins protocol

Vulnerability summary

CVE-2023-27396 is a critical (CVSS 9.8) vulnerability in omron corporation multiple omron products which implement fins protocol. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 71.7% of scored vulnerabilities.

Timeline

1. 19-06-2023
   PublishedVulnerability first disclosed.
2. 24-12-2024
   Last modifiedVulnerability information updated.

Description

FINS (Factory Interface Network Service) is a message communication protocol, which is designed to be used in closed FA (Factory Automation) networks, and is used in FA networks composed of OMRON products. Multiple OMRON products that implement FINS protocol contain following security issues -- (1)Plaintext communication, and (2)No authentication required. When FINS messages are intercepted, the contents may be retrieved. When arbitrary FINS messages are injected, any commands may be executed on, or the system information may be retrieved from, the affected device. Affected products and versions are as follows: SYSMAC CS-series CPU Units, all versions, SYSMAC CJ-series CPU Units, all versions, SYSMAC CP-series CPU Units, all versions, SYSMAC NJ-series CPU Units, all versions, SYSMAC NX1P-series CPU Units, all versions, SYSMAC NX102-series CPU Units, all versions, and SYSMAC NX7 Database Connection CPU Units (Ver.1.16 or later)

• CWE-306Missing Authentication for Critical FunctionThe product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.