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

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Remediation

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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

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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

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Weaknesses