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Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 character encoding in a required context, a different vulnerability than CVE-2014-1559.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade linux-thunderbirdUpgrade thunderbirdUpgrade nssUpgrade firefox-esrUpgrade firefoxUpgrade linux-firefox | Dec 10, 2025 | Jul 23, 2014 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/seamonkey.Upgrade dev-libs/nspr.Upgrade www-client/seamonkey-bin.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin. | Oct 30, 2017 | Jul 23, 2014 |
| Mfsa2014 65 | — | Upgrade to Mozilla Firefox version 31.0Upgrade to the latest version of Mozilla Firefox | Jul 28, 2014 | Jul 23, 2014 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 31.0 | Jul 28, 2014 | Jul 23, 2014 |
| Suse | — | Upgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-other | Dec 18, 2015 | Jul 23, 2014 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Nov 8, 2024 | Jul 23, 2014 |
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