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    CVE-2018-5178

    A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This vulnerability requires the use of a malicious or vulnerable legacy extension in order to occur. This vulnerability affects Thunderbird ESR < 52.8, Thunderbird < 52.8, and Firefox ESR < 52.8.

    Published:May 9, 2018
    Last Modified:Nov 25, 2025
    EPS:Jun 11, 2018
    EPSS Score:0.18917
    CVSS Score:8.1

    Affected Products

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

    Exploits

    No exploit reference

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    References

    http://www.securityfocus.com/bid/104138
    http://www.securitytracker.com/id/1040898
    https://access.redhat.com/errata/RHSA-2018:1414
    https://access.redhat.com/errata/RHSA-2018:1415
    https://access.redhat.com/errata/RHSA-2018:1725
    https://access.redhat.com/errata/RHSA-2018:1726
    https://bugzilla.mozilla.org/show_bug.cgi?id=1443891
    https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html
    https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html
    https://security.gentoo.org/glsa/201810-01
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3660-1/
    https://www.debian.org/security/2018/dsa-4199
    https://www.debian.org/security/2018/dsa-4209
    https://www.mozilla.org/security/advisories/mfsa2018-12/
    https://www.mozilla.org/security/advisories/mfsa2018-13/
    http://www.securityfocus.com/bid/104138
    http://www.securitytracker.com/id/1040898
    https://access.redhat.com/errata/RHSA-2018:1414
    https://access.redhat.com/errata/RHSA-2018:1415
    https://access.redhat.com/errata/RHSA-2018:1725
    https://access.redhat.com/errata/RHSA-2018:1726
    https://bugzilla.mozilla.org/show_bug.cgi?id=1443891
    https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html
    https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html
    https://security.gentoo.org/glsa/201810-01
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3660-1/
    https://www.debian.org/security/2018/dsa-4199
    https://www.debian.org/security/2018/dsa-4209
    https://www.mozilla.org/security/advisories/mfsa2018-12/
    https://www.mozilla.org/security/advisories/mfsa2018-13/

    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