CVE-2024-48984

{"id": "CVE-2024-48984", "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2024-11-20T21:15:07.920", "references": [{"url": "https://github.com/mbed-ce/mbed-os/blob/54e8693ef4ff7e025018094f290a1d5cf380941f/connectivity/FEATURE_BLE/libraries/cordio_stack/ble-host/sources/hci/dual_chip/hci_evt.c#L1317", "source": "cve@mitre.org"}, {"url": "https://github.com/mbed-ce/mbed-os/pull/387", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in MBed OS 6.16.0. When parsing hci reports, the hci parsing software dynamically determines the length of a list of reports by reading a byte from an input stream. It then fetches the length of the first report, uses it to calculate the beginning of the second report, etc. In doing this, it tracks the largest report so it can later allocate a buffer that fits every individual report (but only one at a time). It does not, however, validate that these addresses are all contained within the buffer passed to hciEvtProcessLeExtAdvReport. It is then possible, though unlikely, that the buffer designated to hold the reports is allocated in such a way that one of these out-of-bounds length fields is contained within the new buffer. When the (n-1)th report is copied, it overwrites the length field of the nth report. This now corrupted length field is then used for a memcpy into the new buffer, which may lead to a buffer overflow."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en MBed OS 6.16.0. Al analizar informes hci, el software de an\u00e1lisis hci determina din\u00e1micamente la longitud de una lista de informes leyendo un byte de un flujo de entrada. Luego obtiene la longitud del primer informe, la utiliza para calcular el comienzo del segundo informe, etc. Al hacer esto, realiza un seguimiento del informe m\u00e1s grande para luego asignar un b\u00fafer que se ajuste a cada informe individual (pero solo uno a la vez). Sin embargo, no valida que todas estas direcciones est\u00e9n contenidas dentro del b\u00fafer pasado a hciEvtProcessLeExtAdvReport. Entonces es posible, aunque poco probable, que el b\u00fafer designado para almacenar los informes se asigne de tal manera que uno de estos campos de longitud fuera de los l\u00edmites est\u00e9 contenido dentro del nuevo b\u00fafer. Cuando se copia el (n-1)\u00ba informe, sobrescribe el campo de longitud del n\u00ba informe. Este campo de longitud ahora da\u00f1ado se utiliza luego para una memcpy en el nuevo b\u00fafer, lo que puede provocar un desbordamiento del b\u00fafer."}], "lastModified": "2024-11-25T22:15:14.253", "sourceIdentifier": "cve@mitre.org"}