UBUNTU-CVE-2018-3968

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    UBUNTU-CVE-2018-3968

    Published: 21 Mar 2019Last Modified: 16 Jul 2025
    Upstream:
    CVE-2018-3968

    Summary:

    Details: An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.

    References: https://ubuntu.com/security/CVE-2018-3968, https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633, https://www.cve.org/CVERecord?id=CVE-2018-3968

    Affected packages

    Package

    Name: u-boot

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu4~18.04.1?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2019.07+dfsg-1ubuntu4~18.04.1

    Affected versions

    2016.03+dfsg1-6ubuntu2

    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