Firefox ESR: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even…
CVE-2020-12421 is fixed in 10 products on 2 platforms, first by Mozilla Firefox ESR (en-US) 78.0esr, released June 25, 2020. It is not reported as exploited. Patch Radar priority: Routine.
When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 78.0esr | Mozilla Firefox ESR (en-US) 78.0esr | Jun 25, 2020 |
| Linux | |||
| firefox · RHEL 8 | 0:68.10.0-1.el8_2 | RHSA-2020:2828 | Jul 6, 2020 |
| firefox · Ubuntu 18.04.6 LTS (bionic) | 78.0.1+build1-0ubuntu0.18.04.1 | firefox 78.0.1+build1-0ubuntu0.18.04.1 | Jun 30, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 78.0.1+build1-0ubuntu0.20.04.1 | firefox 78.0.1+build1-0ubuntu0.20.04.1 | Jun 30, 2020 |
| firefox · ol 8 | 0:68.10.0-1.0.1.el8_2 | ELSA-2020-2828 | Jul 8, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 78.0.1+build1-0ubuntu0.18.04.1 | firefox-geckodriver 78.0.1+build1-0ubuntu0.18.04.1 | Jun 30, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 78.0.1+build1-0ubuntu0.20.04.1 | firefox-geckodriver 78.0.1+build1-0ubuntu0.20.04.1 | Jun 30, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 78.0.1+build1-0ubuntu0.18.04.1 | firefox-mozsymbols 78.0.1+build1-0ubuntu0.18.04.1 | Jun 30, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 78.0.1+build1-0ubuntu0.20.04.1 | firefox-mozsymbols 78.0.1+build1-0ubuntu0.20.04.1 | Jun 30, 2020 |
| thunderbird · RHEL 8 | 0:68.10.0-1.el8_2 | RHSA-2020:3038 | Jul 21, 2020 |
| thunderbird · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | thunderbird 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | thunderbird 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
| thunderbird · ol 8 | 0:68.10.0-1.0.1.el8_2 | ELSA-2020-3038 | Jul 22, 2020 |
| thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | thunderbird-gnome-support 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | thunderbird-gnome-support 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
| thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | thunderbird-mozsymbols 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | thunderbird-mozsymbols 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
| xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | xul-ext-calendar-timezones 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | xul-ext-calendar-timezones 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
| xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | xul-ext-gdata-provider 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | xul-ext-gdata-provider 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
| xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) | 1:68.10.0+build1-0ubuntu0.18.04.1 | xul-ext-lightning 1:68.10.0+build1-0ubuntu0.18.04.1 | Oct 8, 2020 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:68.10.0+build1-0ubuntu0.20.04.1 | xul-ext-lightning 1:68.10.0+build1-0ubuntu0.20.04.1 | Oct 8, 2020 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.