The HTTP/2 implementation in Mozilla Firefox before 43.0 allows remote attackers to cause a denial of service (integer underflow, assertion failure, and application exit) via a single-byte header frame that triggers incorrect memory allocation.
CVSS Details
- CVSS 3.1 Base Score: 4.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefoxUpgrade linux-firefoxUpgrade thunderbirdUpgrade libxulUpgrade linux-seamonkeyUpgrade seamonkeyUpgrade linux-thunderbirdUpgrade firefox-esr | Dec 10, 2025 | Dec 15, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox. | Oct 30, 2017 | Dec 16, 2015 |
| Mfsa2015 142 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 43.0 | Dec 18, 2015 | Dec 16, 2015 |
| Suse | — | Upgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox | Jan 4, 2016 | Dec 16, 2015 |
| Ubuntu | — | Upgrade firefox | Dec 18, 2015 | Dec 15, 2015 |
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