2023-04-24 12:24:31 +02:00
{
"id" : "CVE-2021-34148" ,
"sourceIdentifier" : "cve@mitre.org" ,
"published" : "2021-09-07T07:15:07.420" ,
2024-12-08 03:06:42 +00:00
"lastModified" : "2024-11-21T06:09:57.433" ,
"vulnStatus" : "Modified" ,
2024-07-14 02:06:08 +00:00
"cveTags" : [ ] ,
2023-04-24 12:24:31 +02:00
"descriptions" : [
{
"lang" : "en" ,
"value" : "The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the reception of LMP_max_slot with a greater ACL Length after completion of the LMP setup procedure, allowing attackers in radio range to trigger a denial of service (firmware crash) via a crafted LMP packet."
} ,
{
"lang" : "es" ,
"value" : "Una implementaci\u00f3n de Bluetooth Classic en la pila WICED BT de Cypress versiones hasta 2.9.0 para los dispositivos CYW20735B1, no maneja apropiadamente la recepci\u00f3n de LMP_max_slot con una longitud ACL mayor despu\u00e9s de completar el procedimiento de configuraci\u00f3n de LMP, permitiendo a atacantes en el rango de radio desencadenar una denegaci\u00f3n de servicio (bloqueo del firmware) por medio de un paquete LMP dise\u00f1ado"
}
] ,
"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" ,
2024-12-08 03:06:42 +00:00
"baseScore" : 6.5 ,
"baseSeverity" : "MEDIUM" ,
2023-04-24 12:24:31 +02:00
"attackVector" : "ADJACENT_NETWORK" ,
"attackComplexity" : "LOW" ,
"privilegesRequired" : "NONE" ,
"userInteraction" : "NONE" ,
"scope" : "UNCHANGED" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
2024-12-08 03:06:42 +00:00
"availabilityImpact" : "HIGH"
2023-04-24 12:24:31 +02:00
} ,
"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" ,
2024-12-08 03:06:42 +00:00
"baseScore" : 6.1 ,
2023-04-24 12:24:31 +02:00
"accessVector" : "ADJACENT_NETWORK" ,
"accessComplexity" : "LOW" ,
"authentication" : "NONE" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
2024-12-08 03:06:42 +00:00
"availabilityImpact" : "COMPLETE"
2023-04-24 12:24:31 +02:00
} ,
"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:wireless_internet_connectivity_for_embedded_devices:*:*:*:*:*:*:*:*" ,
"versionEndIncluding" : "2.9.0" ,
"matchCriteriaId" : "9A29026A-CED7-4BAD-8B64-B5E45A7A6A29"
}
]
} ,
{
"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"
]
2024-12-08 03:06:42 +00:00
} ,
{
"url" : "https://dl.packetstormsecurity.net/papers/general/braktooth.pdf" ,
"source" : "af854a3a-2127-422b-91ae-364da2661108" ,
"tags" : [
"Technical Description" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices" ,
"source" : "af854a3a-2127-422b-91ae-364da2661108" ,
"tags" : [
"Vendor Advisory"
]
2023-04-24 12:24:31 +02:00
}
]
}