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A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Sep 20, 2017 | Mar 13, 2017 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade thunderbird-debuginfoUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird | Mar 9, 2017 | Mar 7, 2017 |
| Debian | — | Upgrade firefox-esrUpgrade icedove | Mar 11, 2017 | Mar 7, 2017 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade libxulUpgrade seamonkeyUpgrade thunderbirdUpgrade firefoxUpgrade linux-firefox | Mar 8, 2017 | Mar 7, 2017 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin. | Oct 30, 2017 | May 9, 2017 |
| Mfsa2017 05 | — | Upgrade to Mozilla Firefox version 52.0Upgrade to the latest version of Mozilla Firefox | Mar 8, 2017 | Mar 7, 2017 |
| Mfsa2017 06 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 45.8 | Mar 8, 2017 | Mar 7, 2017 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 52.0 | Mar 8, 2017 | Mar 7, 2017 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 45.8.0-0.175.3.20.0.2.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 45.8.0-0.175.3.19.0.2.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 45.8.0-0.175.3.19.0.2.0 on Solaris 11.3Upgrade web/browser/firefox to version 45.8.0-0.175.3.19.0.2.0 on Solaris 11.3Upgrade mail/thunderbird to version 45.8.0-0.175.3.20.0.3.0 on Solaris 11.3 | May 29, 2017 | May 29, 2017 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Mar 9, 2017 | Mar 7, 2017 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbird-debuginfo | Mar 11, 2017 | Mar 7, 2017 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaFirefox-translationsUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbird-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-devel | Mar 15, 2017 | Mar 7, 2017 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Mar 8, 2017 | Mar 7, 2017 |
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