CVE-2019-1842

{"id": "CVE-2019-1842", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "ykramarz@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2019-06-05T17:29:00.430", "references": [{"url": "http://www.securityfocus.com/bid/108687", "tags": ["Third Party Advisory", "VDB Entry"], "source": "ykramarz@cisco.com"}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190605-iosxr-ssh", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-287"}]}, {"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-285"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the Secure Shell (SSH) authentication function of Cisco IOS XR Software could allow an authenticated, remote attacker to successfully log in to an affected device using two distinct usernames. The vulnerability is due to a logic error that may occur when certain sequences of actions are processed during an SSH login event on the affected device. An attacker could exploit this vulnerability by initiating an SSH session to the device with a specific sequence that presents the two usernames. A successful exploit could result in logging data misrepresentation, user enumeration, or, in certain circumstances, a command authorization bypass. See the Details section for more information."}, {"lang": "es", "value": "Una vulnerabilidad en la funci\u00f3n de identificaci\u00f3n Secure Shell (SSH) del software IOS XR de Cisco, podr\u00eda permitir a un atacante remoto identificado iniciar sesi\u00f3n correctamente en un dispositivo afectado usando dos nombres de usuario distintos. La vulnerabilidad es debido a un error l\u00f3gico que puede ocurrir cuando ciertas secuencias de acciones son procesadas durante un evento de inicio de sesi\u00f3n SSH en el dispositivo afectado. Un atacante podr\u00eda aprovechar esta vulnerabilidad mediante el inicio de una sesi\u00f3n SSH en el dispositivo con una secuencia espec\u00edfica que presenta los dos nombres de usuario. Una operaci\u00f3n con \u00e9xtio podr\u00eda resultar en el registro de datos falsos, enumeraci\u00f3n de usuarios o, en ciertas circunstancias, una omisi\u00f3n de la autorizaci\u00f3n de comandos. Vea la secci\u00f3n de Detalles para m\u00e1s informaci\u00f3n."}], "lastModified": "2020-10-16T15:41:44.930", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xr_firmware:6.1.2.tools:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C7572F0-53A7-49B2-97A5-A9FAC7AFAD3C"}, {"criteria": "cpe:2.3:o:cisco:ios_xr_firmware:6.1.3.tools:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36326A0C-80EB-4AC3-8B99-5BCA81F100D2"}, {"criteria": "cpe:2.3:o:cisco:ios_xr_firmware:6.2.3.tools:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0004444D-F0B5-4AFC-B02A-515AEBFB8CFA"}, {"criteria": "cpe:2.3:o:cisco:ios_xr_firmware:6.4.2.tools:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C67AFE4B-EAF7-457D-8948-11C86FC483C7"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "324C97E6-1810-404F-9F45-6240F99FF039"}, {"criteria": 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