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These PLCs are programmed using the SYMAC Studio engineering software (which compiles IEC 61131-3 conformant POU code to native machine code for execution by the PLC's runtime). The resulting machine code is executed by a runtime, typically controlled by a real-time operating system. The logic that is downloaded to the PLC does not seem to be cryptographically authenticated, allowing an attacker to manipulate transmitted object code to the PLC and execute arbitrary machine code on the processor of the PLC's CPU module in the context of the runtime. In the case of at least the NJ series, an RTOS and hardware combination is used that would potentially allow for memory protection and privilege separation and thus limit the impact of code execution. However, it was not confirmed whether these sufficiently segment the runtime from the rest of the RTOS."}, {"lang": "es", "value": "Los PLC de la familia de productos SYSMAC Nx de Omron (series NJ, NY, NX y PMAC) versiones hasta 18-05-2022, carecen de autenticaci\u00f3n criptogr\u00e1fica. Estos PLC son programados usando el software de ingenier\u00eda SYMAC Studio (que compila el c\u00f3digo POU conforme a la norma IEC 61131-3 en c\u00f3digo m\u00e1quina nativo para su ejecuci\u00f3n por el tiempo de ejecuci\u00f3n del PLC). El c\u00f3digo m\u00e1quina resultando es ejecutado por un tiempo de ejecuci\u00f3n, normalmente controlado por un sistema operativo en tiempo real. La l\u00f3gica que es descargada en el PLC no parece estar autenticada criptogr\u00e1ficamente, permitiendo a un atacante manipular el c\u00f3digo objeto transmitido al PLC y ejecutar c\u00f3digo m\u00e1quina arbitrario en el procesador del m\u00f3dulo CPU del PLC en el contexto del tiempo de ejecuci\u00f3n. En el caso de al menos la serie NJ, es usada una combinaci\u00f3n de RTOS y hardware que potencialmente permitir\u00eda la protecci\u00f3n de la memoria y la separaci\u00f3n de privilegios y, por tanto, limitar\u00eda el impacto de la ejecuci\u00f3n de c\u00f3digo. Sin embargo, no ha sido confirmado si \u00e9stos segmentan suficientemente el tiempo de ejecuci\u00f3n del resto del RTOS."}], "id": "CVE-2022-31206", "lastModified": "2024-11-21T07:04:07.527", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-07-26T22:15:11.400", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.forescout.com/blog/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.forescout.com/blog/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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