{ "id": "CVE-2021-34146", "sourceIdentifier": "cve@mitre.org", "published": "2021-09-07T07:15:07.327", "lastModified": "2021-09-14T14:56:38.277", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "The Bluetooth Classic implementation in the Cypress CYW920735Q60EVB does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and restart (crash) of the device by flooding it with LMP_AU_Rand packets after the paging procedure." }, { "lang": "es", "value": "Una implementaci\u00f3n de Bluetooth Classic en el Cypress CYW920735Q60EVB no maneja apropiadamente la recepci\u00f3n de respuestas LMP continuas no solicitadas, permitiendo a atacantes en el rango de radio desencadenar una denegaci\u00f3n de servicio y reinicio (crash) del dispositivo al inundarlo con paquetes LMP_AU_Rand despu\u00e9s del procedimiento de paginaci\u00f3n" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 2.8, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "accessVector": "ADJACENT_NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.1 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 6.5, "impactScore": 6.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:cypress:cyw920735q60evb-01_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "F7346686-15A9-48E0-A585-208284B94033" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:cypress:cyw920735q60evb-01:-:*:*:*:*:*:*:*", "matchCriteriaId": "E0F717A9-CCE1-4D1A-9726-48BB0A13BE57" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:cypress:cyw20735b1_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "15A97D16-7D02-4170-AB33-60E5A44F2CB0" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:cypress:cyw20735b1:-:*:*:*:*:*:*:*", "matchCriteriaId": "F6EBADCA-0C07-4AA0-827D-881CD6FEBE49" } ] } ] } ], "references": [ { "url": "https://dl.packetstormsecurity.net/papers/general/braktooth.pdf", "source": "cve@mitre.org", "tags": [ "Technical Description", "Third Party Advisory" ] }, { "url": "https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices", "source": "cve@mitre.org", "tags": [ "Vendor Advisory" ] } ] }