The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-esrUpgrade librewolf | Aug 22, 2024 | Aug 10, 2020 |
| Centos_linux | — | Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfo | Aug 27, 2020 | Aug 10, 2020 |
| Mfsa2020 30 | — | Upgrade to Mozilla Firefox version 79.0Upgrade to the latest version of Mozilla Firefox | Jul 29, 2020 | Jul 28, 2020 |
| Mfsa2020 32 | — | Upgrade to Mozilla Firefox ESR version 78.1Upgrade to the latest version of Mozilla Firefox | Jul 29, 2020 | Jul 28, 2020 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 78.1Upgrade to the latest version of Mozilla Thunderbird | Jul 29, 2020 | Jul 28, 2020 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4Upgrade web/browser/firefox to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 68.12.0-11.4.27.0.1.82.0 on Solaris 11.4 | Jan 19, 2021 | Aug 10, 2020 |
| Oracle_linux | — | Upgrade firefox | Aug 29, 2020 | Jul 28, 2020 |
| Redhat_linux | — | No solution existsUpgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Aug 27, 2020 | Aug 10, 2020 |
| Suse | — | Upgrade pipewire-toolsUpgrade pipewire-docUpgrade mozillafirefox-branding-sleUpgrade pipewire-libjack-0_3Upgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade pipewire-modulesUpgrade MozillaFirefox-translations-otherUpgrade pipewire-develUpgrade pipewireUpgrade gstreamer-plugin-pipewireUpgrade mozillafirefox-branding-upstreamUpgrade pipewire-spa-toolsUpgrade MozillaFirefox-develUpgrade pipewire-spa-plugins-0_2Upgrade libpipewire-0_3-0Upgrade mozillafirefox-buildsymbolsUpgrade pipewire-libpulse-0_3 | Aug 1, 2020 | Jul 31, 2020 |
| Ubuntu | — | Upgrade firefox | Aug 5, 2020 | Jul 29, 2020 |
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