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Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent)."},{"lang":"es","value":"Una vulnerabilidad en la implementación de Cisco Discovery Protocol para Cisco IOS XR Software, podría permitir a un atacante adyacente no autenticado ejecutar código arbitrario o causar una recarga sobre un dispositivo afectado. La vulnerabilidad es debido a la comprobación inapropiada de la entrada de cadena de determinados campos en los mensajes de Cisco Discovery Protocol. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete malicioso de Cisco Discovery Protocol hacia un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar un desbordamiento del búfer de la pila, lo que podría permitir al atacante ejecutar código arbitrario con privilegios administrativos sobre un dispositivo afectado. Cisco Discovery Protocol es un protocolo de Capa 2. Para explotar esta vulnerabilidad, un atacante debe encontrarse en el mismo dominio de difusión que el dispositivo afectado (Capa 2 adyacente)."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"cvssMetricV30":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:A/AC:L/Au:N/C:C/I:C/A:C","baseScore":8.3,"accessVector":"ADJACENT_NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":6.5,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"cisaExploitAdd":"2021-11-03","cisaActionDue":"2022-05-03","cisaRequiredAction":"Apply 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