CVE-2023-44190

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bypass MAC address checking, allowing MAC addresses not intended to reach the adjacent LAN to be forwarded to the downstream network. Due to this issue, the router will start forwarding traffic if a valid route is present in forwarding-table, causing a loop and congestion in the downstream layer-2 domain connected to the device.\n\nThis issue affects Juniper Networks Junos OS Evolved on PTX10001, PTX10004, PTX10008, and PTX10016:\n\n\n\n * All versions prior to 21.4R3-S5-EVO;\n * 22.1 versions prior to 22.1R3-S4-EVO;\n * 22.2 versions 22.2R1-EVO and later;\n * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\n * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO;\n * 23.2 versions prior to 23.2R1-S1-EVO, 23.2R2-EVO.\n\n\n\n\n\n\n"}, {"lang": "es", "value": "Una vulnerabilidad de validaci\u00f3n de origen en la validaci\u00f3n de direcciones MAC de Juniper Networks Junos OS Evolved en dispositivos PTX10001, PTX10004, PTX10008 y PTX10016 permite que un atacante adyacente a la red omita la verificaci\u00f3n de direcciones MAC, lo que permite reenviar direcciones MAC que no est\u00e1n destinadas a llegar a la LAN adyacente a la red descendente. Debido a este problema, el router comenzar\u00e1 a reenviar tr\u00e1fico si hay una ruta v\u00e1lida en la tabla de reenv\u00edo, lo que provocar\u00e1 un bucle y una congesti\u00f3n en el dominio de capa 2 descendente conectado al dispositivo. Este problema afecta a Juniper Networks Junos OS Evolved en PTX10001, PTX10004, PTX10008 y PTX10016: * Todas las versiones anteriores a 21.4R3-S5-EVO; * Versiones 22.1 anteriores a 22.1R3-S4-EVO; * 22.2 versiones 22.2R1-EVO y posteriores; * Versiones 22.3 anteriores a 22.3R2-S2-EVO, 22.3R3-S1-EVO; * Versiones 22.4 anteriores a 22.4R2-S1-EVO, 22.4R3-EVO; * Versiones 23.2 anteriores a 23.2R1-S1-EVO, 23.2R2-EVO."}], "id": "CVE-2023-44190", "lastModified": "2026-06-17T06:27:05.337", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-44190", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-18T14:32:10.891227Z", "version": "2.0.3"}}]}, "published": "2023-10-11T22:15:10.067", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA73154"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA73154"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-346"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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