{ "id": "CVE-2021-31383", "sourceIdentifier": "sirt@juniper.net", "published": "2021-10-19T19:15:11.313", "lastModified": "2021-10-25T17:01:22.810", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO." }, { "lang": "es", "value": "En escenarios Punto a Multipunto (P2MP) dentro de sesiones establecidas entre vecinos de red o adyacentes, el uso inadecuado de una operaci\u00f3n de escritura de copia de origen a destino combinada con un desbordamiento del b\u00fafer basado en la pila en determinados paquetes espec\u00edficos procesados por el demonio del protocolo de enrutamiento (RPD) de Juniper Networks Junos OS y Junos OS Evolved enviados por un atacante de red remoto no autenticado causa el bloqueo del RPD causando una Denegaci\u00f3n de Servicio (DoS). Si se siguen recibiendo y procesando estos paquetes, se crear\u00e1 una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema afecta a: Juniper Networks Junos OS versiones 19.2 anteriores a 19.2R3-S2; versiones 19.3 anteriores a 19.3R2-S6, 19.3R3-S2; versiones 19.4 anteriores a 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R2-S3, 20.2R3; versiones 20.3 anteriores a 20.3R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a 19.2R1. Versiones de Juniper Networks Junos OS Evolved 20.1 anteriores a 20.1R3-EVO; versiones 20.2 anteriores a 20.2R3-EVO; versiones 20.3 anteriores a 20.3R2-EVO" } ], "metrics": { "cvssMetricV31": [ { "source": "sirt@juniper.net", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-787" } ] }, { "source": "sirt@juniper.net", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-121" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*", "matchCriteriaId": "0E7545CE-6300-4E81-B5AF-2BE150C1B190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*", "matchCriteriaId": "4CA3060F-1800-4A06-A453-FB8CE4B65312" }, { "vulnerable": true, "criteria": "cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "9A5B337A-727C-4767-AD7B-E0F7F99EB46F" }, { "vulnerable": true, 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