A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Aug 30, 2017 | Jun 15, 2017 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefox | Jun 16, 2017 | Jun 14, 2017 |
| Debian | — | Upgrade firefox-esrUpgrade icedove | Jun 16, 2017 | Jun 14, 2017 |
| Freebsd | — | Upgrade seamonkeyUpgrade linux-firefoxUpgrade thunderbirdUpgrade linux-seamonkeyUpgrade libxulUpgrade firefoxUpgrade firefox-esrUpgrade linux-thunderbird | Jun 16, 2017 | Jun 13, 2017 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin. | Feb 20, 2018 | Feb 20, 2018 |
| Mfsa2017 15 | — | Upgrade to Mozilla Firefox version 54.0Upgrade to the latest version of Mozilla Firefox | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 16 | — | Upgrade to Mozilla Firefox ESR version 52.2Upgrade to the latest version of Mozilla Firefox | Jun 14, 2017 | Jun 13, 2017 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 52.2Upgrade to the latest version of Mozilla Thunderbird | Jun 15, 2017 | Jun 14, 2017 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/browser/firefox to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade mail/thunderbird to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3 | Jul 19, 2017 | Jul 19, 2017 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Jun 15, 2017 | Jun 14, 2017 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefox | Jun 15, 2017 | Jun 14, 2017 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade mozilla-nssUpgrade MozillaFirefox-translations-commonUpgrade firefox-libffi4Upgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-develUpgrade firefox-libstdc++6Upgrade libsoftokn3-32bitUpgrade mozilla-nss-x86Upgrade MozillaThunderbird-develUpgrade libfreebl3-32bitUpgrade MozillaThunderbird-buildsymbolsUpgrade mozilla-nss-develUpgrade MozillaFirefox-translationsUpgrade MozillaFirefox-branding-SLEDUpgrade mozilla-nss-32bitUpgrade libsoftokn3Upgrade libsoftokn3-x86Upgrade mozillafirefox-branding-sleUpgrade libfreebl3-x86Upgrade MozillaFirefoxUpgrade mozilla-nss-toolsUpgrade libfreebl3 | Jun 19, 2017 | Jun 14, 2017 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Jun 16, 2017 | Jun 14, 2017 |
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