UBUNTU-CVE-2020-26556

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    UBUNTU-CVE-2020-26556

    Published: 24 May 2021Last Modified: 17 Sept 2026
    Upstream:
    CVE-2020-26556

    Summary:

    Details: Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.

    References: https://ubuntu.com/security/CVE-2020-26556, https://kb.cert.org/vuls/id/799380, https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/malleable/, https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/, https://www.cve.org/CVERecord?id=CVE-2020-26556

    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-2020-26556 | CVE-DB