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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mozilla
Published: 2019-09-27T17:16:08
Updated: 2024-08-04T23:03:32.475Z
Reserved: 2019-05-03T00:00:00
Link: CVE-2019-11747
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-09-27T18:15:12.507
Modified: 2024-11-21T04:21:42.680
Link: CVE-2019-11747
Redhat