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{"affected": [{"affectedData": [{"product": "Apache Impala", "vendor": "Apache Software Foundation", "versions": [{"status": "affected", "version": "2.7.0 to 2.8.0 incubating"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:impala:2.7.0:*:*:*:*:*:*:*", "matchCriteriaId": "497D7640-736C-4B18-94AE-5C72435383F3", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:impala:2.8.0:*:*:*:*:*:*:*", "matchCriteriaId": "75A4E559-9641-4301-8175-29FB21AA65C7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "It was noticed that a malicious process impersonating an Impala daemon in Apache Impala (incubating) 2.7.0 to 2.8.0 could cause Impala daemons to skip authentication checks when Kerberos is enabled (but TLS is not). If the malicious server responds with 'COMPLETE' before the SASL handshake has completed, the client will consider the handshake as completed even though no exchange of credentials has happened."}, {"lang": "es", "value": "Se not\u00f3 que un proceso malicioso que suplantaba un demonio Impala en Apache Impala (incubando) versi\u00f3n 2.7.0 hasta 2.8.0, podr\u00eda causar que el demonio Impala omita las comprobaciones de autenticaci\u00f3n cuando Kerberos est\u00e1 habilitado (pero TLS no). Si el servidor malicioso responde con \u201cCOMPLETE\u201d antes de que se haya completado el protocolo de enlace SASL, el cliente considerar\u00e1 soporte como completado aunque no se haya producido ning\u00fan intercambio de credenciales."}], "id": "CVE-2017-5640", "lastModified": "2026-06-17T01:20:54.380", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-07-10T20:29:00.237", "references": [{"source": "security@apache.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/99508"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/c02e83aa46c90b7cbc87dd649cf8f9b73e11053eddea9144a397da53%40%3Cdev.impala.apache.org%3E"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/99508"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.apache.org/thread.html/c02e83aa46c90b7cbc87dd649cf8f9b73e11053eddea9144a397da53%40%3Cdev.impala.apache.org%3E"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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