The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Aug 22, 2024 | Apr 26, 2019 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Apr 26, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Apr 26, 2019 |
| Centos_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-debugsource | Apr 1, 2019 | Mar 19, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Mar 21, 2019 | Mar 21, 2019 |
| Freebsd | — | Upgrade linux-seamonkeyUpgrade thunderbirdUpgrade firefox-esrUpgrade linux-firefoxUpgrade libxulUpgrade waterfoxUpgrade seamonkeyUpgrade linux-thunderbirdUpgrade firefox | Mar 20, 2019 | Mar 19, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin. | Apr 3, 2019 | Apr 2, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade firefox | May 1, 2019 | Apr 26, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade firefox | May 30, 2019 | Apr 26, 2019 |
| Mfsa2019 07 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 66.0 | Mar 20, 2019 | Mar 19, 2019 |
| Mfsa2019 08 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 60.6 | Mar 20, 2019 | Mar 19, 2019 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 60.6 | Mar 26, 2019 | Mar 19, 2019 |
| Oracle Solaris | — | Upgrade library/libmozjs-60 to version 60.8.0-11.4.33.0.1.94.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.6.0-11.4.8.0.1.3.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 60.6.0-11.4.8.0.1.3.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4 | Apr 17, 2019 | Apr 17, 2019 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Apr 1, 2019 | Mar 20, 2019 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-debugsource | Mar 21, 2019 | Mar 20, 2019 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaFirefox-translations-common | Apr 1, 2019 | Mar 19, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Apr 1, 2019 | Mar 19, 2019 |
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