{ "id": "CVE-2021-34761", "sourceIdentifier": "ykramarz@cisco.com", "published": "2021-10-27T19:15:08.003", "lastModified": "2022-10-27T16:44:08.077", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges." }, { "lang": "es", "value": "Una vulnerabilidad en el software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir a un atacante local autenticado sobrescribir o a\u00f1adir datos arbitrarios a los archivos del sistema usando privilegios de nivel de root. El atacante debe tener credenciales administrativas en el dispositivo. Esta vulnerabilidad es debido a una comprobaci\u00f3n incompleta de la entrada del usuario para un comando CLI espec\u00edfico. Un atacante podr\u00eda explotar esta vulnerabilidad al autenticarse en el dispositivo con privilegios administrativos y emitiendo un comando CLI con par\u00e1metros de usuario dise\u00f1ados. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante sobrescribir o a\u00f1adir datos arbitrarios a los archivos del sistema usando privilegios de nivel root" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.0, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 0.8, "impactScore": 5.2 } ], "cvssMetricV30": [ { "source": "ykramarz@cisco.com", "type": "Secondary", "cvssData": { "version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 0.8, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:N/I:C/A:C", "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 6.6 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 3.9, "impactScore": 9.2, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-668" } ] }, { "source": "ykramarz@cisco.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-73" } ] } ], "configurations": [ { "nodes": [ { 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] } ] } ], "references": [ { "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc", "source": "ykramarz@cisco.com", "tags": [ "Vendor Advisory" ] } ] }