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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Aug 30, 2017 | Sep 22, 2016 |
| Centos_linux | — | Upgrade firefox | Sep 22, 2016 | Aug 4, 2016 |
| Debian | — | Upgrade firefox-esr | Sep 23, 2016 | Aug 4, 2016 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefoxUpgrade libxulUpgrade linux-firefoxUpgrade seamonkey | Dec 10, 2025 | Sep 7, 2016 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird. | Oct 30, 2017 | Aug 4, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade firefox | Nov 30, 2017 | Aug 4, 2016 |
| Mfsa2016 75 | — | Upgrade to Mozilla Firefox version 48.0 | Aug 3, 2016 | Aug 2, 2016 |
| Mfsa2016 86 | — | Upgrade to Mozilla Firefox ESR version 45.4Upgrade to the latest version of Mozilla Firefox | Oct 25, 2016 | Aug 4, 2016 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade developer/yasm to version 1.3.0-0.175.3.14.0.2.0 on Solaris 11.3Upgrade mail/thunderbird to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 45.4.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade web/browser/firefox to version 45.4.0-0.175.3.14.0.4.0 on Solaris 11.3 | May 29, 2017 | Aug 4, 2016 |
| Oracle_linux | — | Upgrade firefox | Sep 21, 2016 | Sep 20, 2016 |
| Redhat_linux | — | Upgrade firefoxUpgrade firefox-debuginfo | Oct 21, 2016 | Aug 4, 2016 |
| Suse | — | Upgrade MozillaFirefox-translationsUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-other | Aug 22, 2016 | Aug 4, 2016 |
| Ubuntu | — | Upgrade firefox | Aug 6, 2016 | Aug 4, 2016 |
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