Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before 48.0 and Firefox ESR < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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 | Aug 30, 2017 | Sep 22, 2016 |
| Centos_linux | — | centos-upgrade-firefox | Sep 22, 2016 | Aug 4, 2016 |
| Debian | debian-upgrade-firefox-esr | Sep 23, 2016 | Aug 4, 2016 | |
| 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 | Dec 10, 2025 | Sep 7, 2016 | |
| 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 | Oct 30, 2017 | Aug 4, 2016 | |
| Huawei Euleros 2_0_sp1 | huawei-euleros-2_0_sp1-upgrade-firefox | Nov 30, 2017 | Aug 4, 2016 | |
| Mfsa2016 75 | mozilla-firefox-upgrade-48_0 | Aug 3, 2016 | Aug 2, 2016 | |
| Mfsa2016 86 | mozilla-firefox-esr-upgrade-45_4 | Oct 25, 2016 | Aug 4, 2016 | |
| Oracle Solaris | oracle-solaris-11-3-upgrade-developer-yasm-1-3-0-0-175-3-14-0-2-0oracle-solaris-11-3-upgrade-mail-thunderbird-45-3-0-0-175-3-14-0-4-0oracle-solaris-11-3-upgrade-mail-thunderbird-plugin-thunderbird-lightning-45-3-0-0-175-3-14-0-4-0oracle-solaris-11-3-upgrade-web-browser-firefox-45-4-0-0-175-3-14-0-4-0oracle-solaris-11-3-upgrade-web-data-firefox-bookmarks-45-4-0-0-175-3-14-0-4-0 | May 29, 2017 | Aug 4, 2016 | |
| Oracle_linux | — | oracle-linux-upgrade-firefox | Sep 21, 2016 | Sep 20, 2016 |
| Redhat_linux | — | redhat-upgrade-firefoxredhat-upgrade-firefox-debuginfo | Oct 21, 2016 | Aug 4, 2016 |
| Suse | — | suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-develsuse-upgrade-mozillafirefox-translationssuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-other | Aug 22, 2016 | Aug 4, 2016 |
| Ubuntu | ubuntu-upgrade-firefox | Aug 6, 2016 | Aug 4, 2016 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub