CVE-2024-39511

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An attacker can cause a sustained DoS condition by running this command repeatedly.\n\nWhen the crash occurs, the authentication status of any 802.1x clients is cleared, and any authorized dot1x port becomes unauthorized. The client cannot re-authenticate until the dot1x daemon restarts.\n\nThis issue affects Junos OS:\n * All versions before 20.4R3-S10;\n * 21.2 versions before 21.2R3-S7;\n * 21.4 versions before 21.4R3-S6;\n * 22.1 versions before 22.1R3-S5;\n * 22.2 versions before 22.2R3-S3;\n * 22.3 versions before 22.3R3-S2;\n * 22.4 versions before 22.4R3-S1;\n * 23.2 versions before 23.2R2."}, {"lang": "es", "value": "Una vulnerabilidad de validaci\u00f3n de entrada incorrecta en el demonio de autenticaci\u00f3n 802.1X (dot1x) de Juniper Networks Junos OS permite que un atacante local con pocos privilegios y acceso a la CLI provoque una denegaci\u00f3n de servicio (DoS). Al ejecutar un comando operativo dot1x espec\u00edfico, el demonio dot1x falla. Un atacante puede provocar una condici\u00f3n DoS sostenida ejecutando este comando repetidamente. Cuando se produce el fallo, el estado de autenticaci\u00f3n de cualquier cliente 802.1x se borra y cualquier puerto dot1x autorizado queda no autorizado. El cliente no puede volver a autenticarse hasta que se reinicie el demonio dot1x. Este problema afecta a Junos OS: * Todas las versiones anteriores a 20.4R3-S10; * Versiones 21.2 anteriores a 21.2R3-S7; * Versiones 21.4 anteriores a 21.4R3-S6; * Versiones 22.1 anteriores a 22.1R3-S5; * Versiones 22.2 anteriores a 22.2R3-S3; * Versiones 22.3 anteriores a 22.3R3-S2; * Versiones 22.4 anteriores a 22.4R3-S1; * Versiones 23.2 anteriores a 23.2R2."}], "id": "CVE-2024-39511", "lastModified": "2026-06-17T07:42:04.867", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "sirt@juniper.net", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-39511", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-07-11T13:41:20.299537Z", "version": "2.0.3"}}]}, "published": "2024-07-10T23:15:10.127", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA82976"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA82976"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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