VDB

CVE-2019-11747

CVE-2019-11747 PUBLISHED

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.

EPSS 0.35% · 57.9th percentile

Risk Scores

EPSS Score
0.35%
57.9th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSmozjs520, 52.9.1-1ubuntu3, 52.9.1-1build1
Ubuntu:16.04:LTSfirefox51.0.1+build2-0ubuntu0.16.04.2, 58.0+build6-0ubuntu0.16.04.1, 58.0.1+build1-0ubuntu0.16.04.1
Ubuntu:18.04:LTSmozjs380, 38.8.0~repack1-0ubuntu1, *
Ubuntu:18.04:LTSmozjs520, 52.8.1-0ubuntu0.18.04.1, 52.9.1-0ubuntu0.18.04.1
Ubuntu:18.04:LTSfirefox60.0+build2-0ubuntu1, 60.0.1+build2-0ubuntu0.18.04.1, 61.0+build3-0ubuntu0.18.04.1

Timeline

  • Sep 4, 2019 CVE Published
  • Apr 14, 2021 EPSS Score
  • Jun 23, 2021 EPSS Score
  • Aug 24, 2021 EPSS Score
  • Dec 27, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Feb 4, 2022 EPSS Score
  • Feb 28, 2022 EPSS Score
  • Apr 1, 2022 EPSS Score
  • Jul 3, 2022 EPSS Score
  • Sep 4, 2022 EPSS Score
  • Nov 6, 2022 EPSS Score
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