CVE-2018-12395

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    CVE-2018-12395

    Published: 28 Feb 2019Last Modified: 16 Apr 2026

    Summary:

    Details: By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.

    References: http://www.securitytracker.com/id/1041944, https://access.redhat.com/errata/RHSA-2018:3005, https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html, https://security.gentoo.org/glsa/201811-04, https://www.mozilla.org/security/advisories/mfsa2018-26/, http://www.securityfocus.com/bid/105718, https://access.redhat.com/errata/RHSA-2018:3006, https://usn.ubuntu.com/3801-1/, https://www.debian.org/security/2018/dsa-4324, https://www.mozilla.org/security/advisories/mfsa2018-27/, https://bugzilla.mozilla.org/show_bug.cgi?id=1467523

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2018-12395 | CVE-DB