Memory safety bugs were reported in Firefox 55 and Firefox ESR 52.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.0 Vector: (CVSS:3.0/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 | — | alpine-linux-upgrade-firefox-esr | Dec 1, 2017 | Oct 25, 2017 |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Jun 11, 2018 | |
| Centos_linux | — | centos-upgrade-firefoxcentos-upgrade-firefox-debuginfocentos-upgrade-thunderbirdcentos-upgrade-thunderbird-debuginfo | Oct 2, 2017 | Sep 29, 2017 |
| Debian | debian-upgrade-firefox-esrdebian-upgrade-thunderbird | Sep 30, 2017 | Sep 29, 2017 | |
| Freebsd | freebsd-upgrade-package-firefoxfreebsd-upgrade-package-seamonkeyfreebsd-upgrade-package-linux-seamonkeyfreebsd-upgrade-package-firefox-esrfreebsd-upgrade-package-linux-firefoxfreebsd-upgrade-package-libxulfreebsd-upgrade-package-thunderbirdfreebsd-upgrade-package-linux-thunderbird | Sep 29, 2017 | Sep 29, 2017 | |
| Gentoo Linux | gentoo-linux-upgrade-mail-client-thunderbirdgentoo-linux-upgrade-mail-client-thunderbird-bingentoo-linux-upgrade-www-client-firefoxgentoo-linux-upgrade-www-client-firefox-bin | Feb 20, 2018 | Feb 20, 2018 | |
| Mfsa2017 21 | mozilla-firefox-upgrade-56_0 | Jul 12, 2018 | Jun 11, 2018 | |
| Mfsa2017 22 | mozilla-firefox-esr-upgrade-52_4 | Sep 29, 2017 | Sep 28, 2017 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-52_4 | Oct 11, 2017 | Oct 9, 2017 | |
| Oracle Solaris | oracle-solaris-11-3-upgrade-mail-thunderbird-52-4-0-0-175-3-26-0-4-0oracle-solaris-11-3-upgrade-mail-thunderbird-plugin-thunderbird-lightning-52-4-0-0-175-3-26-0-4-0oracle-solaris-11-3-upgrade-web-browser-firefox-52-4-0-0-175-3-25-0-3-0oracle-solaris-11-3-upgrade-web-browser-firefox-plugin-firefox-java-52-4-0-0-175-3-25-0-3-0oracle-solaris-11-3-upgrade-web-data-firefox-bookmarks-52-4-0-0-175-3-25-0-3-0 | Nov 30, 2017 | Nov 30, 2017 | |
| Oracle_linux | — | oracle-linux-upgrade-firefoxoracle-linux-upgrade-thunderbird | Sep 29, 2017 | Sep 28, 2017 |
| Redhat_linux | — | redhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginfo | Oct 4, 2017 | Sep 29, 2017 |
| Suse | — | suse-upgrade-libfreebl3suse-upgrade-libfreebl3-32bitsuse-upgrade-libfreebl3-hmacsuse-upgrade-libfreebl3-hmac-32bitsuse-upgrade-libfreebl3-x86suse-upgrade-libsoftokn3suse-upgrade-libsoftokn3-32bitsuse-upgrade-libsoftokn3-hmacsuse-upgrade-libsoftokn3-hmac-32bitsuse-upgrade-libsoftokn3-x86suse-upgrade-mozilla-nsssuse-upgrade-mozilla-nss-32bitsuse-upgrade-mozilla-nss-certssuse-upgrade-mozilla-nss-certs-32bitsuse-upgrade-mozilla-nss-develsuse-upgrade-mozilla-nss-sysinitsuse-upgrade-mozilla-nss-sysinit-32bitsuse-upgrade-mozilla-nss-toolssuse-upgrade-mozilla-nss-x86suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-develsuse-upgrade-mozillafirefox-translationssuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-othersuse-upgrade-mozillathunderbirdsuse-upgrade-mozillathunderbird-buildsymbolssuse-upgrade-mozillathunderbird-develsuse-upgrade-mozillathunderbird-translations-commonsuse-upgrade-mozillathunderbird-translations-other | Oct 2, 2017 | Sep 29, 2017 |
| Ubuntu | ubuntu-upgrade-firefoxubuntu-upgrade-libmozjs-52-0ubuntu-upgrade-thunderbird | Oct 3, 2017 | Sep 29, 2017 |
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