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bluez vulnerabilities

Vulnerabilities published for bluez in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 11

  1. CVE-2019-8922

    High · CVSS 8.8EPSS 1.52%Fix available

    CVE-2019-8922

    A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. There isn't any check on whether there is enough space in the destination buffer. The function simply appends all data passed to it. The values of all attributes that are requested are appended to the output buffer. There are no size checks whatsoever, resulting in a simple heap overflow if one can craft a request where the response is large enough to overflow the preallocated buffer. This issue exists in service_attr_req gets called by process_request (in sdpd-request.c), which also allocates the response buffer.

    • Update to 5.48-0ubuntu3.7
    Published Updated
  2. CVE-2019-8921

    Medium · CVSS 6.5EPSS 1.01%Fix available

    CVE-2019-8921

    An issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. The root cause can be found in the function service_attr_req of sdpd-request.c. The server does not check whether the CSTATE data is the same in consecutive requests, and instead simply trusts that it is the same.

    • Update to 5.48-0ubuntu3.6
    Published Updated
  3. CVE-2021-41229

    Medium · CVSS 4.3EPSS 1.18%Fix available

    Memory leak in BlueZ

    BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.

    • Update to 5.48-0ubuntu3.6
    Published Updated
  4. CVE-2020-26558

    Medium · CVSS 4.6EPSS 0.87%Fix available

    CVE-2020-26558

    Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.

    • Update to 5.48-0ubuntu3.5
    Published Updated

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