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Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://www.kb.cert.org/vuls/id/589825","refsource":"MISC","name":"https://www.kb.cert.org/vuls/id/589825"},{"refsource":"MISC","name":"https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709","url":"https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709"},{"refsource":"CONFIRM","name":"https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/","url":"https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/"}]}},"nvd":{"publishedDate":"2020-09-11 14:15:00","lastModifiedDate":"2022-11-16 15:19:00","problem_types":["CWE-287"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.2,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*","versionEndExcluding":"5.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"15802","Ordinal":"177209","Title":"CVE-2020-15802","CVE":"CVE-2020-15802","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"15802","Ordinal":"1","NoteData":"Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"15802","Ordinal":"2","NoteData":"2020-09-11","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"15802","Ordinal":"3","NoteData":"2020-11-13","Type":"Other","Title":"Modified"}]}}}