UBUNTU-CVE-2020-26559

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    UBUNTU-CVE-2020-26559

    Published: 24 May 2021Last Modified: 17 Sept 2026
    Upstream:
    CVE-2020-26559

    Summary:

    Details: Bluetooth Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (participating in the provisioning protocol) to identify the AuthValue used given the Provisioner’s public key, and the confirmation number and nonce provided by the provisioning device. This could permit a device without the AuthValue to complete provisioning without brute-forcing the AuthValue.

    References: https://ubuntu.com/security/CVE-2020-26559, https://kb.cert.org/vuls/id/799380, https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/authvalue-leak/, https://bugzilla.redhat.com/show_bug.cgi?id=1960011, https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/, https://www.cve.org/CVERecord?id=CVE-2020-26559

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.11.0-12.19

    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-2020-26559 | CVE-DB