UBUNTU-CVE-2018-18500

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    UBUNTU-CVE-2018-18500

    Published: 30 Jan 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-18500

    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: https://ubuntu.com/security/CVE-2018-18500, https://www.mozilla.org/en-US/security/advisories/mfsa2019-01/#CVE-2018-18500, https://www.mozilla.org/en-US/security/advisories/mfsa2019-03/#CVE-2018-18500, https://ubuntu.com/security/notices/USN-3874-1, https://ubuntu.com/security/notices/USN-3897-1, https://www.cve.org/CVERecord?id=CVE-2018-18500

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build2-0ubuntu0.14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -65.0+build2-0ubuntu0.14.04.1

    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