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Once having run out of memory the FPC will crash and restart along with a core dump. Continued receipted of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos Evolved is not affected."}, {"lang": "es", "value": "Una vulnerabilidad de Falta de Liberaci\u00f3n de Memoria despu\u00e9s del Tiempo de Vida Efectivo en el Motor de Reenv\u00edo de Paquetes (PFE) de Juniper Networks Junos OS en la serie PTX permite a un atacante adyacente causar una Denegaci\u00f3n de Servicio (DoS) mediante el env\u00edo de paquetes BGP flowspec aut\u00e9nticos que causan una p\u00e9rdida de memoria de la pila de FPC. Una vez que se haya agotado la memoria, el FPC se bloquear\u00e1 y se reiniciar\u00e1 junto con un volcado del n\u00facleo. Una recepci\u00f3n continuada de estos paquetes crear\u00e1 una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS). Este problema afecta a: Juniper Networks Junos OS Todas las versiones anteriores a 18.4R3-S9; versiones 19.1 anteriores a 19.1R3-S7; versiones 19.2 anteriores a 19.2R1-S7, 19.2R3-S3; versiones 19.3 anteriores a 19.3R2-S6, 19.3R3-S3; versiones 19.4 anteriores a 19. 4R1-S4, 19.4R3-S6; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R3-S1; versiones 20.3 anteriores a 20.3R3; versiones 20.4 anteriores a 20.4R3; versiones 21.1 anteriores a 21.1R2. Juniper Networks Junos Evolved no est\u00e1 afectado"}], "id": "CVE-2021-31367", "lastModified": "2021-10-25T15:00:42.167", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Primary"}]}, "published": "2021-10-19T19:15:09.573", "references": [{"source": "sirt@juniper.net", "tags": ["Patch", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA11229"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

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