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attacker to cause a denial of service (DoS) condition. The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to a device that is running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature. A device must meet two conditions to be affected by this vulnerability: (1) the device must be running a version of Cisco IOS Software or Cisco IOS XE Software that supports ANI (regardless of whether ANI is configured); and (2) the device must have a reachable IPv6 interface. An exploit could allow the attacker to cause the affected device to reload. Cisco Bug IDs: CSCvc42729."}, {"lang": "es", "value": "Una vulnerabilidad en la Autonomic Networking Infrastructure (ANI) caracter\u00edstica del Software Cisco IOS (15.4 en versiones hasta 15.6) y software Cisco IOS XE (3.7 en versiones hasta 3.18 y 16) podr\u00eda permitir a un atacante remoto no autenticado, provocar una denegaci\u00f3n de servicio (DoS). La vulnerabilidad se debe a la validaci\u00f3n incompleta de los paquetes manipulados. Un atacante podr\u00eda explotar esta vulnerabilidad enviando paquete IPv6 manipulado a un dispositivo que ejecuta un software Cisco IOS o software Cisco IOS XE que soporta la funci\u00f3n ANI. Un dispositivo debe cumplir dos condiciones para ser afectado por esta vulnerabilidad: (1) el dispositivo debe estar ejecutando una versi\u00f3n de software Cisco o software Cisco IOS XE que soporta ANI (Independientemente de si ANI est\u00e1 configurado); Y (2) el dispositivo debe tener una interfaz IPv6 accesible. Un explotaci\u00f3n podr\u00eda permitir al atacante hacer que el dispositivo afectado vuelva a cargar. Cisco Bug IDs: CSCvc42729."}], "id": "CVE-2017-3850", "lastModified": "2026-05-13T00:24:29.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-21T16:59:00.257", "references": [{"source": "psirt@cisco.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/96971"}, {"source": "psirt@cisco.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1038065"}, {"source": "psirt@cisco.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/96971"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1038065"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "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"}]}

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