UBUNTU-CVE-2021-3658

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    UBUNTU-CVE-2021-3658

    Published: 28 Jul 2021Last Modified: 27 Apr 2026
    Upstream:
    CVE-2021-3658
    Aliases:
    USN-5155-1

    Summary:

    Details: bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up. If a device is powered down while discoverable, it will be discoverable when powered on again. This could lead to inadvertent exposure of the bluetooth stack to physically nearby attackers.

    References: https://ubuntu.com/security/CVE-2021-3658, https://ubuntu.com/security/notices/USN-5155-1, https://www.cve.org/CVERecord?id=CVE-2021-3658

    Affected packages

    Package

    Name: bluez

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.53-0ubuntu3.4

    Affected versions

    5.50-0ubuntu4

    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
    UBUNTU-CVE-2021-3658 | CVE-DB