UBUNTU-CVE-2018-18495

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    UBUNTU-CVE-2018-18495

    Published: 11 Dec 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-18495
    Aliases:
    USN-3844-1

    Summary:

    Details: WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.

    References: https://ubuntu.com/security/CVE-2018-18495, https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18495, https://ubuntu.com/security/notices/USN-3844-1, https://www.cve.org/CVERecord?id=CVE-2018-18495

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build3-0ubuntu0.14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -64.0+build3-0ubuntu0.14.04.1

    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
    UBUNTU-CVE-2018-18495 | CVE-DB