Description
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.
Published: 2019-09-27
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2019-3417 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.
Ubuntu USN Ubuntu USN USN-4122-1 Firefox vulnerabilities
History

No history.

Subscriptions

Mozilla Firefox Firefox Esr
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-04T23:03:32.475Z

Reserved: 2019-05-03T00:00:00.000Z

Link: CVE-2019-11747

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-09-27T18:15:12.507

Modified: 2024-11-21T04:21:42.680

Link: CVE-2019-11747

cve-icon Redhat

Severity : Low

Publid Date: 2019-09-03T00:00:00Z

Links: CVE-2019-11747 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses