If a malicious site repeatedly triggers a modal authentication prompt, eventually the browser UI will become non-responsive, requiring shutdown through the operating system. This is a denial of service (DOS) attack. This vulnerability affects Firefox < 52 and Thunderbird < 52.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade libxulUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade thunderbirdUpgrade seamonkeyUpgrade linux-firefoxUpgrade firefox | Mar 8, 2017 | Mar 7, 2017 |
| Mfsa2017 05 | — | Upgrade to Mozilla Firefox version 52.0 | Mar 8, 2017 | Mar 7, 2017 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 52.0 | Apr 11, 2017 | Apr 5, 2017 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3Upgrade web/browser/firefox to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3 | Jul 19, 2017 | Jul 19, 2017 |
| Suse | — | Upgrade mozillafirefox-translations-commonUpgrade MozillaThunderbird-buildsymbolsUpgrade mozillafirefox-translations-otherUpgrade mozillafirefox-develUpgrade mozillathunderbird-translations-otherUpgrade mozillathunderbirdUpgrade mozillathunderbird-translations-commonUpgrade mozillafirefoxUpgrade MozillaThunderbird-devel | Mar 15, 2017 | Mar 7, 2017 |
| Ubuntu | — | Upgrade firefox | Mar 8, 2017 | Mar 7, 2017 |
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