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This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to."}, {"lang": "es", "value": "Una vulnerabilidad en el proceso del servidor SSH de Cisco IOS XR Software podr\u00eda permitir a un atacante remoto autenticado sobrescribir y leer archivos arbitrario en el dispositivo local. Esta vulnerabilidad es debido a una insuficiente comprobaci\u00f3n de entrada de los argumentos suministrados por el usuario para un m\u00e9todo espec\u00edfico de transferencia de archivos. Un atacante con privilegios de nivel inferior podr\u00eda explotar esta vulnerabilidad al especificar par\u00e1metros del Protocolo de Copia Segura (SCP) cuando se autentifica en un dispositivo. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante elevar sus privilegios y recuperar y cargar archivos en un dispositivo al que no deber\u00eda tener acceso"}], "id": "CVE-2021-34718", "lastModified": "2024-11-21T06:11:02.320", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 8.5, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 9.2, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "ykramarz@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-09T05:15:11.103", "references": [{"source": "ykramarz@cisco.com", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-scp-inject-QwZOCv2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-scp-inject-QwZOCv2"}], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-88"}], "source": "ykramarz@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-88"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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