CVE-2019-8921

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    CVE-2019-8921

    Published: 29 Nov 2021Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html, https://security.netapp.com/advisory/ntap-20211203-0002/, https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2019-8921 | CVE-DB