A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This vulnerability requires the use of a malicious or vulnerable legacy extension in order to occur. This vulnerability affects Thunderbird ESR < 52.8, Thunderbird < 52.8, and Firefox ESR < 52.8.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | May 23, 2018 | May 16, 2018 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Jun 11, 2018 |
| 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 | May 22, 2018 | May 9, 2018 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 12, 2018 | May 9, 2018 |
| Freebsd | — | Upgrade firefox-esrUpgrade linux-thunderbirdUpgrade linux-seamonkeyUpgrade waterfoxUpgrade linux-firefoxUpgrade libxulUpgrade thunderbirdUpgrade firefoxUpgrade seamonkey | May 10, 2018 | May 9, 2018 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin. | Oct 3, 2018 | Jun 11, 2018 |
| Mfsa2018 12 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 52.8 | May 10, 2018 | May 9, 2018 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 52.8 | May 22, 2018 | May 18, 2018 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 52.8.0-0.175.3.33.0.4.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 52.8.0-0.175.3.33.0.4.0 on Solaris 11.3Upgrade web/browser/firefox to version 52.8.0-0.175.3.33.0.4.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.8.0-0.175.3.33.0.4.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 52.8.0-0.175.3.33.0.4.0 on Solaris 11.3 | Jun 18, 2018 | Jun 11, 2018 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | May 15, 2018 | May 9, 2018 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | May 15, 2018 | May 9, 2018 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-develUpgrade MozillaFirefox-translationsUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-common | May 12, 2018 | May 9, 2018 |
| Ubuntu | — | Upgrade thunderbird | Jun 5, 2018 | May 9, 2018 |
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