CVE-2017-3826

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The vulnerability is due to incomplete validation of SCTP packets being monitored on the NGA data ports. An attacker could exploit this vulnerability by sending malformed SCTP packets on a network that is monitored by an NGA data port. SCTP packets addressed to the IP address of the NGA itself will not trigger this vulnerability. An exploit could allow the attacker to cause the appliance to become unresponsive or reload, causing a DoS condition. User interaction could be needed to recover the device using the reboot command from the CLI. The following Cisco NetFlow Generation Appliances are vulnerable: NGA 3140, NGA 3240, NGA 3340. Cisco Bug IDs: CSCvc83320."}, {"lang": "es", "value": "Una vulnerabilidad en el decodificador Stream Control Transmission Protocol (SCTP) de Cisco NetFlow Generation Appliance (NGA) con software anterior a 1.1 (1a) podr\u00eda permitir a un atacante remoto no autenticado hacer que el dispositivo se bloquee o se vuelva a cargar inesperadamente, provocando una condici\u00f3n de denegaci\u00f3n de servicio (DoS). La vulnerabilidad se debe a validaci\u00f3n incompleta de los paquetes SCTP que se supervisan en los puertos de datos NGA. Un atacante podr\u00eda explotar esta vulnerabilidad enviando paquetes SCTP malformados en una red supervisada por un puerto de datos NGA. Los paquetes SCTP dirigidos a la direcci\u00f3n IP de la propia NGA no desencadenar\u00e1n esta vulnerabilidad. Un exploit podr\u00eda permitir al atacante hacer que el aparato no respondiera o se volviera a cargar, provocando una condici\u00f3n DoS. La interacci\u00f3n del usuario podr\u00eda ser necesaria para recuperar el dispositivo utilizando el comando de reinicio de la CLI. Los siguientes Cisco NetFlow Generation Appliances son vulnerables: NGA 3140, NGA 3240, NGA 3340. ID de error de Cisco: CSCvc83320."}], "id": "CVE-2017-3826", "lastModified": "2026-06-17T01:18:59.907", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-01T21:59:00.367", "references": [{"source": "psirt@cisco.com", "url": "http://www.securityfocus.com/bid/96509"}, {"source": "psirt@cisco.com", "url": "http://www.securitytracker.com/id/1037938"}, {"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170301-nga"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/96509"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1037938"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170301-nga"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-399"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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