CVE-2022-22210

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On QFX5K Series and MX Series, when the PFE receives a specific VxLAN packet the Layer 2 Address Learning Manager (L2ALM) process will crash leading to an FPC reboot. Continued receipt of this specific packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on QFX5000 Series, MX Series: 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S2; 21.2 versions prior to 21.2R2-S1. This issue does not affect Juniper Networks Junos OS: All versions prior to 20.3R1; 21.1 version 21.1R1 and later versions."}, {"lang": "es", "value": "Una vulnerabilidad de desreferencia de puntero NULL en el motor de reenv\u00edo de paquetes (PFE) de Junos OS de Juniper Networks en las series QFX5000 y MX permite a un atacante adyacente no autenticado causar una Denegaci\u00f3n de Servicio (DoS). En las series QFX5K y MX, cuando el PFE recibe un paquete VxLAN espec\u00edfico, el proceso Layer 2 Address Learning Manager (L2ALM) es bloqueado, conllevando a un reinicio del FPC. La recepci\u00f3n continuada de este paquete espec\u00edfico crear\u00e1 una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema afecta al Sistema Operativo Junos de Juniper Networks en las series QFX5000 y MX: versiones 20.3 anteriores a 20.3R3-S3; versiones 20.4 anteriores a 20.4R3-S2; versiones 21.2 anteriores a 21.2R2-S1. Este problema no afecta a Juniper Networks Junos OS: Todas las versiones anteriores a 20.3R1; 21.1 versi\u00f3n 21.1R1 y posteriores"}], "id": "CVE-2022-22210", "lastModified": "2026-06-17T04:28:00.687", "metrics": {"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": "Secondary"}, {"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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-07-20T15:15:08.703", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA69714"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA69714"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

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