CVE-2022-22219

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Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have 'leave-sync-route-oldstyle' enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. 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in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash, leading to a Denial of Service (DoS) condition. Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have 'leave-sync-route-oldstyle' enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO."}, {"lang": "es", "value": "Debido a una administraci\u00f3n inapropiada de un tipo de datos inesperado en el procesamiento de rutas EVPN en Juniper Networks Junos OS y Junos OS Evolved, un atacante que tenga el control directo de un cliente BGP conectado a un reflector de rutas, o por medio de un ataque de tipo machine in the middle (MITM), puede enviar una ruta EVPN espec\u00edfica contenida en una actualizaci\u00f3n de BGP, desencadenando un fallo del demonio del protocolo de enrutamiento (RPD), conllevando a una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS). La recepci\u00f3n y el procesamiento continuos de estas rutas EVPN espec\u00edficas podr\u00edan crear una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema s\u00f3lo es producido en los reflectores de ruta BGP, s\u00f3lo dentro de un entorno de multidifusi\u00f3n BGP EVPN, y s\u00f3lo cuando uno o m\u00e1s clientes BGP tienen habilitado \"leave-sync-route-oldstyle\". Este problema afecta: Juniper Networks Junos OS 21.3 versiones anteriores a 21.3R3-S2; 21.4 versiones anteriores a 21.4R2-S2, 21.4R3; 22.1 versiones anteriores a 22.1R1-S2, 22.1R3; 22.2 versiones anteriores a 22.2R2. Juniper Networks Junos OS Evolved 21.3 versi\u00f3n 21.3R1-EVO y versiones posteriores anteriores a 21.4R3-EVO; 22.1 versiones anteriores a 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versiones anteriores a 22.2R2-EVO. Este problema no afecta a: Juniper Networks Junos OS versiones anteriores a 21.3R1. Versiones del Juniper Networks Junos OS anteriores a 21.3R1-EVO"}], "id": "CVE-2022-22219", "lastModified": "2026-06-17T04:28:02.307", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-22219", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-05-12T14:43:38.666053Z", "version": "2.0.3"}}]}, "published": "2022-10-18T03:15:09.577", "references": [{"source": "sirt@juniper.net", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA69898"}, {"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/ref/statement/evpn-edit-routing-instances-protocols.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA69898"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/ref/statement/evpn-edit-routing-instances-protocols.html"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-241"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

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