UBUNTU-CVE-2017-18343

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    UBUNTU-CVE-2017-18343

    Published: 20 Jul 2018Last Modified: 16 Jul 2025
    Upstream:
    CVE-2017-18343

    Summary:

    Details: ** DISPUTED ** The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get URI. NOTE: the vendor's position is that this is not a vulnerability because the debug tools are not intended for production use. NOTE: the Symfony Debug component is used by Laravel Debugbar.

    References: https://ubuntu.com/security/CVE-2017-18343, https://github.com/barryvdh/laravel-debugbar/issues/850, https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c, https://github.com/symfony/symfony/issues/27987, https://github.com/symfony/symfony/pull/23684, https://www.cve.org/CVERecord?id=CVE-2017-18343

    Affected packages

    Package

    Name: symfony

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.4.6+dfsg-1ubuntu0.1

    Affected versions

    2.8.7+dfsg-1.3ubuntu1

    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