CVE-2018-18500

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    CVE-2018-18500

    Published: 5 Feb 2019Last Modified: 16 Apr 2026

    Summary:

    Details: A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html, https://www.debian.org/security/2019/dsa-4392, https://access.redhat.com/errata/RHSA-2019:0219, https://security.gentoo.org/glsa/201904-07, https://usn.ubuntu.com/3874-1/, https://www.mozilla.org/security/advisories/mfsa2019-03/, https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html, https://www.mozilla.org/security/advisories/mfsa2019-01/, https://usn.ubuntu.com/3897-1/, http://www.securityfocus.com/bid/106781, https://access.redhat.com/errata/RHSA-2019:0218, https://access.redhat.com/errata/RHSA-2019:0270, https://security.gentoo.org/glsa/201903-04, https://access.redhat.com/errata/RHSA-2019:0269, https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html, https://www.debian.org/security/2019/dsa-4376, https://www.mozilla.org/security/advisories/mfsa2019-02/

    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-2018-18500 | CVE-DB