CVE-2017-12213

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{"affected": [{"affectedData": [{"product": "Cisco Catalyst 4000 Series Switches", "vendor": "n/a", "versions": [{"status": "affected", "version": "Cisco Catalyst 4000 Series Switches"}]}], "source": "psirt@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*", "matchCriteriaId": "B7D95E8A-8F0B-44E5-B266-09E10BAAEC55", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:cisco:catalyst_4000:-:*:*:*:*:*:*:*", "matchCriteriaId": "8320F2D5-4847-460C-A8A7-3E7E22C5E0C7", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the dynamic access control list (ACL) feature of Cisco IOS XE Software running on Cisco Catalyst 4000 Series Switches could allow an unauthenticated, adjacent attacker to cause dynamic ACL assignment to fail and the port to fail open. This could allow the attacker to pass traffic to the default VLAN of the affected port. The vulnerability is due to an uncaught error condition that may occur during the reassignment of the auth-default-ACL dynamic ACL to a switch port after 802.1x authentication fails. A successful exploit of this issue could allow a physically adjacent attacker to bypass 802.1x authentication and cause the affected port to fail open, allowing the attacker to pass traffic to the default VLAN of the affected switch port. Cisco Bug IDs: CSCvc72751."}, {"lang": "es", "value": "Una vulnerabilidad en la caracter\u00edstica de lista de control de acceso (ACL) din\u00e1mica de Cisco IOS XE Software que se ejecuta en Cisco Catalyst 4000 Series Switches podr\u00eda permitir que un atacante adyacente no autenticado provoque un fallo en la asignaci\u00f3n de listas de control de acceso din\u00e1micas y que el puerto falle y quede abierto. Esto podr\u00eda permitir a un atacante pasar tr\u00e1fico al VLAN por defecto del puerto afectado. Esta vulnerabilidad se debe a una condici\u00f3n de error no capturado que podr\u00eda ocurrir durante la reasignaci\u00f3n de lista de control de acceso din\u00e1micas auth-default-ACL a un puerto switch despu\u00e9s de que la autenticaci\u00f3n 802.1 falle. Una explotaci\u00f3n con \u00e9xito de esta vulnerabilidad podr\u00eda permitir a un atacante f\u00edsicamente adyacente omitir la autenticaci\u00f3n 802.1x y provocar que el puerto afectado quede abierto por error, permitiendo que el atacante pase tr\u00e1fico al VLAN por defecto del puerto switch afectado. Cisco Bug IDs: CSCvc72751."}], "id": "CVE-2017-12213", "lastModified": "2026-06-17T01:02:53.623", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-09-07T21:29:00.317", "references": [{"source": "psirt@cisco.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/100663"}, {"source": "psirt@cisco.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039284"}, {"source": "psirt@cisco.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-cat"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/100663"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039284"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-cat"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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