Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers to track users by observing network traffic from multiple IP addresses.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade firefox | Aug 6, 2016 | Aug 3, 2016 |
| Debian | — | Upgrade firefox-esr | Aug 6, 2016 | Aug 3, 2016 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade libxulUpgrade linux-firefoxUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade firefoxUpgrade thunderbird | Dec 10, 2025 | Sep 7, 2016 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Oct 30, 2017 | Aug 4, 2016 |
| Mfsa2016 63 | — | Upgrade to Mozilla Firefox ESR version 45.3Upgrade to Mozilla Firefox version 48.0Upgrade to the latest version of Mozilla Firefox | Aug 3, 2016 | Aug 2, 2016 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 45.4.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade mail/thunderbird to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning 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 developer/yasm to version 1.3.0-0.175.3.14.0.2.0 on Solaris 11.3 | May 29, 2017 | Aug 4, 2016 |
| Oracle_linux | — | Upgrade firefox | Aug 6, 2016 | Aug 2, 2016 |
| Redhat_linux | — | Upgrade firefox-debuginfoUpgrade firefox | Aug 3, 2016 | Aug 3, 2016 |
| Suse | — | Upgrade MozillaThunderbirdUpgrade libfreebl3Upgrade MozillaFirefox-branding-SLEDUpgrade MozillaFirefox-translations-commonUpgrade mozilla-nspr-develUpgrade mozilla-nssUpgrade MozillaThunderbird-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-develUpgrade mozilla-nspr-32bitUpgrade MozillaThunderbird-buildsymbolsUpgrade mozilla-nsprUpgrade libfreebl3-32bitUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-translationsUpgrade mozilla-nss-toolsUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade mozilla-nss-develUpgrade firefox-fontconfigUpgrade mozilla-nss-32bit | Aug 26, 2016 | Aug 4, 2016 |
| Ubuntu | — | Upgrade firefox | Aug 6, 2016 | Aug 4, 2016 |
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