383
VMScore

CVE-2019-11747

Published: 27/09/2019 Updated: 05/10/2019
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Vulnerability Summary

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 in Firefox prior to 69.0, 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.

Vulnerability Trend

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mozilla firefox

mozilla firefox esr

Vendor Advisories

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Mozilla Foundation Security Advisory 2019-25 Security vulnerabilities fixed in Firefox 69 Announced September 3, 2019 Impact critical Products Firefox Fixed in Firefox 69 ...
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 in Firefox before 690, sites on the pre-load list also have their HSTS setting removed ...