UBUNTU-CVE-2017-7840

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    UBUNTU-CVE-2017-7840

    Published: 15 Nov 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-7840
    Aliases:
    USN-3477-1

    Summary:

    Details: JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved bookmarks. If the resulting exported HTML file is later opened in a browser this JavaScript will be executed. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks if users were convinced to add malicious tags to bookmarks, export them, and then open the resulting file. This vulnerability affects Firefox < 57.

    References: https://ubuntu.com/security/CVE-2017-7840, https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/, https://ubuntu.com/security/notices/USN-3477-1, https://www.cve.org/CVERecord?id=CVE-2017-7840

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build4-0ubuntu0.14.04.4?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -57.0+build4-0ubuntu0.14.04.4

    Affected versions

    24.0+build1-0ubuntu1

    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