UBUNTU-CVE-2018-12386

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    UBUNTU-CVE-2018-12386

    Published: 3 Oct 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-12386
    Aliases:
    USN-3778-1

    Summary:

    Details: A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

    References: https://ubuntu.com/security/CVE-2018-12386, https://www.mozilla.org/en-US/security/advisories/mfsa2018-24/#CVE-2018-12386, https://ubuntu.com/security/notices/USN-3778-1, https://www.cve.org/CVERecord?id=CVE-2018-12386

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build1-0ubuntu0.14.04.2?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -62.0.3+build1-0ubuntu0.14.04.2

    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