Firefox ESR and 2 others: By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed…
CVE-2020-15677 is fixed in 11 products on 2 platforms, first by RHSA-2020:3832, released September 24, 2020. It is not reported as exploited. Patch Radar priority: Routine.
By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed in the download file dialog to show the original site (the one suffering from the open redirect) rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 91.0 | Mozilla Firefox ESR (en-US) 91.0 | Aug 4, 2021 |
| Mozilla Thunderbird (en-US) | 78.4.0 | Mozilla Thunderbird (en-US) 78.4.0 | Oct 19, 2020 |
| Linux | |||
| firefox · RHEL 8 | 0:78.3.0-1.el8_2 | RHSA-2020:3832 | Sep 24, 2020 |
| firefox · Ubuntu 18.04.6 LTS (bionic) | 81.0+build2-0ubuntu0.18.04.1 | firefox 81.0+build2-0ubuntu0.18.04.1 | Sep 24, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 81.0+build2-0ubuntu0.20.04.1 | firefox 81.0+build2-0ubuntu0.20.04.1 | Sep 24, 2020 |
| firefox · ol 8 | 0:78.3.0-1.0.1.el8_2 | ELSA-2020-3832 | Sep 24, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 81.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 81.0+build2-0ubuntu0.18.04.1 | Sep 24, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 81.0+build2-0ubuntu0.20.04.1 | firefox-geckodriver 81.0+build2-0ubuntu0.20.04.1 | Sep 24, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 81.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 81.0+build2-0ubuntu0.18.04.1 | Sep 24, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 81.0+build2-0ubuntu0.20.04.1 | firefox-mozsymbols 81.0+build2-0ubuntu0.20.04.1 | Sep 24, 2020 |
| thunderbird · RHEL 8 | 0:78.3.1-1.el8_2 | RHSA-2020:4155 | Oct 1, 2020 |
| thunderbird · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | thunderbird 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | thunderbird 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
| thunderbird · ol 8 | 0:78.3.1-1.0.1.el8_2 | ELSA-2020-4155 | Oct 4, 2020 |
| thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | thunderbird-gnome-support 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | thunderbird-gnome-support 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
| thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | thunderbird-mozsymbols 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | thunderbird-mozsymbols 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
| xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | xul-ext-calendar-timezones 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | xul-ext-calendar-timezones 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
| xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | xul-ext-gdata-provider 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | xul-ext-gdata-provider 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
| xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) | 1:78.8.1+build1-0ubuntu0.18.04.1 | xul-ext-lightning 1:78.8.1+build1-0ubuntu0.18.04.1 | Apr 22, 2021 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:78.7.1+build1-0ubuntu0.20.04.1 | xul-ext-lightning 1:78.7.1+build1-0ubuntu0.20.04.1 | Jan 25, 2021 |
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