CVE-2021-0239

{"id": "CVE-2021-0239", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.1, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-04-22T20:15:08.943", "references": [{"url": "https://kb.juniper.net/JSA11134", "tags": ["Vendor Advisory"], "source": "sirt@juniper.net"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-754"}]}, {"type": "Secondary", "source": "sirt@juniper.net", "description": [{"lang": "en", "value": "CWE-754"}]}], "descriptions": [{"lang": "en", "value": "In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions."}, {"lang": "es", "value": "En Juniper Networks, Junos OS Evolved, la recepci\u00f3n de un flujo de tramas de capa 2 genuinas espec\u00edficas puede causar que el proceso de gesti\u00f3n Advanced Forwarding Toolkit (AFT) (Evo-aftmand), responsable de gestionar las operaciones de ruta, clase de servicio (CoS) y cortafuegos. dentro del packet forwarding engine (PFE) para bloquearse y reiniciarse, conllevando a una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS). Al enviar continuamente este flujo espec\u00edfico de tramas genuinas de Capa 2, Un atacante puede ser capaz de bloquear repetidamente el PFE, provocando una Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema afecta a Juniper Networks Junos OS Evolved: todas las versiones anteriores a 20.4R1-EVO. Este problema no afecta a Junos OS versiones"}], "lastModified": "2021-04-27T17:45:37.857", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C9C8866D-162F-4C9B-8167-2FBA25410368"}], "operator": "OR"}]}], "sourceIdentifier": "sirt@juniper.net"}