CVE-2019-20634

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:proofpoint:email_protection:*:*:*:*:*:*:*:*", "matchCriteriaId": "38135AED-BADF-4BCB-9314-320175D5C61A", "versionEndIncluding": "2019-09-08", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Proofpoint Email Protection through 2019-09-08. By collecting scores from Proofpoint email headers, it is possible to build a copy-cat Machine Learning Classification model and extract insights from this model. The insights gathered allow an attacker to craft emails that receive preferable scores, with a goal of delivering malicious emails."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Proofpoint Email Protection hasta el 08-09-2019. Mediante la recopilaci\u00f3n de puntajes de los encabezados de correo electr\u00f3nico de Proofpoint, es posible construir un modelo Machine Learning Classification copy-cat y extraer informaci\u00f3n de este modelo. Los conocimientos capturados permiten a un atacante dise\u00f1ar correos electr\u00f3nicos que reciban puntajes preferenciales, con el prop\u00f3sito de entregar correos electr\u00f3nicos maliciosos."}], "id": "CVE-2019-20634", "lastModified": "2026-06-17T02:30:50.703", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-03-30T21:15:12.373", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/moohax/Proof-Pudding"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/moohax/Talks/blob/master/slides/DerbyCon19.pdf"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.proofpoint.com/us/security/CVE-2019-20634"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sn-2020-0001"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://atlas.mitre.org/studies/AML.CS0008"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/moohax/Proof-Pudding"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/moohax/Talks/blob/master/slides/DerbyCon19.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.proofpoint.com/us/security/CVE-2019-20634"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sn-2020-0001"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-697"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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