An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Sep 20, 2017 | Aug 11, 2017 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox | Aug 16, 2017 | Aug 8, 2017 |
| Debian | — | Upgrade icedoveUpgrade firefox-esr | Aug 11, 2017 | Aug 8, 2017 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade thunderbirdUpgrade firefoxUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade libxulUpgrade linux-firefoxUpgrade seamonkey | Aug 8, 2017 | Aug 8, 2017 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin. | Feb 20, 2018 | Feb 20, 2018 |
| Mfsa2017 18 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 55.0 | Aug 9, 2017 | Aug 8, 2017 |
| Mfsa2017 19 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 52.3 | Aug 9, 2017 | Aug 8, 2017 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 52.3Upgrade to the latest version of Mozilla Thunderbird | Aug 21, 2017 | Aug 18, 2017 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 52.3.0-0.175.3.24.0.2.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.3.0-0.175.3.24.0.4.0 on Solaris 11.3Upgrade mail/thunderbird to version 52.3.0-0.175.3.24.0.4.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 52.3.0-0.175.3.24.0.2.0 on Solaris 11.3Upgrade web/browser/firefox to version 52.3.0-0.175.3.24.0.2.0 on Solaris 11.3 | Sep 19, 2017 | Sep 19, 2017 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Aug 11, 2017 | Aug 8, 2017 |
| Redhat_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefox | Aug 11, 2017 | Aug 8, 2017 |
| Suse | — | Upgrade MozillaFirefoxUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-branding-SLEDUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaFirefox-translationsUpgrade MozillaThunderbird | Aug 12, 2017 | Aug 8, 2017 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Aug 16, 2017 | Aug 8, 2017 |
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