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A successful exploit could allow an attacker with low-level privileges to escalate their privilege level to root."},{"lang":"es","value":"Una vulnerabilidad en un comando de CLI de Cisco IOS XR Software, para los Enrutadores Cisco 8000 Series y los Enrutadores Network Convergence System 540 Series que ejecutan imágenes de software de NCS540L, podría permitir a un atacante local autenticado elevar su privilegio a root. Para explotar esta vulnerabilidad, un atacante necesitaría tener una cuenta válida en un dispositivo afectado. La vulnerabilidad es debido a una comprobación insuficiente de los argumentos de la línea de comandos. Un atacante podría explotar esta vulnerabilidad al autenticarse en el dispositivo e ingresar un comando diseñado en el indicador. Una explotación con éxito podría permitir a un atacante con privilegios de bajo nivel escalar su nivel de privilegio a root"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV30":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":3.9,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-78"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","matchCriteriaId":"9CED0163-5695-4267-8677-1E2C42D73FED"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1.0","versionEndExcluding":"7.2.1","matchCriteriaId":"DDFFC1A3-D76E-4CF9-97F8-D45493CFF949"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:*","matchCriteriaId":"3D8E7FFF-82A8-4ECB-BA0C-CBF0C2FDA3A3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:*","matchCriteriaId":"87DC4C2F-01C5-4D89-8D79-E5D28EDAD0F2"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:8808:-:*:*:*:*:*:*:*","matchCriteriaId":"F5E2AE67-DED3-4414-A194-386ADB2C8DC7"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:8812:-:*:*:*:*:*:*:*","matchCriteriaId":"3920133A-684D-4A9F-B65A-FF4EAE5052E5"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:8818:-:*:*:*:*:*:*:*","matchCriteriaId":"9ED06361-5A68-4656-AEA5-240C290594CD"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.1","matchCriteriaId":"9EEE27AF-9402-4DFA-B1CF-E51972485918"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*","matchCriteriaId":"BC7AE6C1-B7C6-4056-9719-B5CFF71970AD"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pe-QpzCAePe","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pe-QpzCAePe","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}