UBUNTU-CVE-2020-13753

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    UBUNTU-CVE-2020-13753

    Published: 13 Jul 2020Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-13753

    Summary:

    Details: The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER and the TIOCSTI ioctl. CLONE_NEWUSER could potentially be used to confuse xdg-desktop-portal, which allows access outside the sandbox. TIOCSTI can be used to directly execute commands outside the sandbox by writing to the controlling terminal's input buffer, similar to CVE-2017-5226.

    References: https://ubuntu.com/security/CVE-2020-13753, https://ubuntu.com/security/notices/USN-4422-1, https://ubuntu.com/security/notices/USN-4648-1, https://www.cve.org/CVERecord?id=CVE-2020-13753

    Affected packages

    Package

    Name: qtwebkit-opensource-src

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.4.2+dfsg-1ubuntu2.1

    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-2020-13753 | CVE-DB