| Name | CVE-2019-11747 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| firefox (PTS) | sid | 120.0.1-1 | fixed |
| firefox-esr (PTS) | buster | 91.12.0esr-1~deb10u1 | fixed |
| buster (security) | 115.5.0esr-1~deb10u1 | fixed |
| bullseye | 102.15.0esr-1~deb11u1 | fixed |
| bullseye (security) | 115.5.0esr-1~deb11u1 | fixed |
| bookworm, bookworm (security) | 115.5.0esr-1~deb12u1 | fixed |
| sid, trixie | 115.5.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - firefox-esr <not-affected> (Doesn't affect ESR60)
[stretch] - firefox-esr <not-affected> (Doesn't affect ESR60)
[jessie] - firefox-esr <not-affected> (Doesn't affect ESR60)
https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-11747
https://www.mozilla.org/en-US/security/advisories/mfsa2019-26/#CVE-2019-11747