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A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL."},{"lang":"es","value":"Una vulnerabilidad en el procesamiento del tráfico IPv6 del Software Cisco IOS XR,  y el Software Cisco NX-OS para determinados dispositivos Cisco, podría permitir a un atacante remoto no autenticado omitir una lista de control de acceso (ACL) IPv6 configurada para una interfaz de un dispositivo afectado. La vulnerabilidad es debido al procesamiento inapropiado del tráfico IPv6 que se envía por medio de un dispositivo afectado. Un atacante podría explotar esta vulnerabilidad mediante el envío de paquetes IPv6 diseñados que atraviesan el dispositivo afectado. Una explotación con éxito podría permitir al atacante acceder a recursos que normalmente estarían protegidos por la interfaz ACL"}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","baseScore":5.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":2.5}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:N","baseScore":6.4,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-284"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.3","matchCriteriaId":"3B76CC85-2825-44F1-BE8A-3F01573BC199"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.1.0:*:*:*:*:*:*:*","matchCriteriaId":"24DF4040-86A9-46CA-8BAB-04D6016751D5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:*","matchCriteriaId":"84BABFE7-1350-4FB0-B9ED-5F08E386BC40"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*","matchCriteriaId":"BC7AE6C1-B7C6-4056-9719-B5CFF71970AD"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*","matchCriteriaId":"0A972EFE-4F7E-4BFC-8631-66A2D16B74A3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*","matchCriteriaId":"1B254955-C485-45D7-A19B-E78CE1D997AD"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*","matchCriteriaId":"7F72AEF0-EE70-40F8-B52B-1390820B87BB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*","matchCriteriaId":"50C7B71A-2559-4E90-BAAA-C6FAAFE35FC3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*","matchCriteriaId":"43D21B01-A754-474F-8E46-14D733AB307E"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*","matchCriteriaId":"17D6424C-972F-459C-B8F7-04FFD9F541BC"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*","matchCriteriaId":"D4CC8256-E4F8-4DCB-B69A-40A7C5AA41E8"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*","matchCriteriaId":"DA35D4AA-24B3-428E-84ED-804EF941E9A9"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*","matchCriteriaId":"97217080-455C-48E4-8CE1-6D5B9485864F"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9500_r:-:*:*:*:*:*:*:*","matchCriteriaId":"EE07E8D4-376D-4341-A656-F8440368A8A9"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}