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    CVE-2018-12395

    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.

    Published:Oct 23, 2018
    Last Modified:Nov 21, 2024
    EPS:Feb 28, 2019
    EPSS Score:0.01851
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-284 Improper Access Control

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    References

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

    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