CVE-2019-11747

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    CVE-2019-11747

    Published: 27 Sept 2019Last Modified: 16 Apr 2026

    Summary:

    Details: The "Forget about this site" feature in the History pane is intended to remove all saved user data that indicates a user has visited a site. This includes removing any HTTP Strict Transport Security (HSTS) settings received from sites that use it. Due to a bug, sites on the pre-load list also have their HSTS setting removed. On the next visit to that site if the user specifies an http: URL rather than secure https: they will not be protected by the pre-loaded HSTS setting. After that visit the site's HSTS setting will be restored. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html, http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html, https://www.mozilla.org/security/advisories/mfsa2019-25/, https://www.mozilla.org/security/advisories/mfsa2019-26/, https://bugzilla.mozilla.org/show_bug.cgi?id=1564481

    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-2019-11747 | CVE-DB