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The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted autonomic network channel discovery packet to a device that has all the following characteristics: (1) running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature; (2) configured as an autonomic registrar; (3) has a whitelist configured. An exploit could allow the attacker to cause the affected device to reload. Note: Autonomic networking should be configured with a whitelist. Do not remove the whitelist as a workaround. Cisco Bug IDs: CSCvc42717."}, {"lang": "es", "value": "Una vulnerabilidad en la Autonomic Networking Infrastructure (ANI) registrar caracter\u00edstica de software Cisco IOS (posiblemente 15.2 en versiones hasta 15.6) y software Cisco IOS XE (posiblemente 3.7 en versiones hasta 3.18 y 16) podr\u00eda permitir a un atacante no autenticado y adyacente provocar una denegaci\u00f3n de servicio (DoS). La vulnerabilidad se debe a la validaci\u00f3n incompleta de entrada en ciertos paquetes creados. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un paquete de descubrimiento de canal de red auton\u00f3mico a un dispositivo que tiene todas las caracter\u00edsticas siguientes: (1) funcionamiento a Cisco IOS Software o software Cisco IOS XE que admita la funci\u00f3n ANI; (2) configurado como registrador auton\u00f3mico; (3) tiene una lista blanca configurada. Un explotaci\u00f3n podr\u00eda permitir al atacante hacer que el dispositivo afectado se volviera a cargar. Nota: Las redes aut\u00f3nomas deben configurarse con una lista blanca. No elimine la lista blanca como soluci\u00f3n. Cisco Bug IDs: CSCvc42717."}], "id": "CVE-2017-3849", "lastModified": "2025-04-20T01:37:25.860", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-21T16:59:00.227", "references": [{"source": "psirt@cisco.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/96972"}, {"source": "psirt@cisco.com", "url": "http://www.securitytracker.com/id/1038064"}, {"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-ani"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/96972"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1038064"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-ani"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}