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The nsHtml5TreeBuilder::resetTheInsertionMode function in the HTML5 Tree Builder in Mozilla Firefox before 24.0, Thunderbird before 24.0, and SeaMonkey before 2.21 does not properly maintain the state of the insertion-mode stack for template elements, which allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer over-read) by triggering use of this stack in its empty state.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade linux-firefoxUpgrade seamonkeyUpgrade thunderbirdUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefox | Dec 10, 2025 | Aug 18, 2013 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin.Upgrade www-client/seamonkey-bin.Upgrade mail-client/thunderbird.Upgrade www-client/seamonkey.Upgrade www-client/firefox. | Oct 30, 2017 | Sep 18, 2013 |
| Mfsa2013 77 | — | Upgrade to Mozilla Firefox version 24.0Upgrade to the latest version of Mozilla Firefox | Sep 25, 2013 | Sep 18, 2013 |
| Mozilla Seamonkey | — | Upgrade to Mozilla SeaMonkey version 2.21Upgrade to the latest version of Mozilla SeaMonkey | Dec 8, 2014 | Sep 18, 2013 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 24.0Upgrade to the latest version of Mozilla Thunderbird | Sep 25, 2013 | Sep 18, 2013 |
| Suse | — | Upgrade enigmailUpgrade mozillafirefox-branding-upstreamUpgrade seamonkey-translations-commonUpgrade seamonkeyUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade seamonkey-dom-inspectorUpgrade seamonkey-translations-otherUpgrade MozillaThunderbird-buildsymbolsUpgrade mozillafirefox-buildsymbolsUpgrade seamonkey-ircUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-develUpgrade MozillaFirefox-develUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-commonUpgrade seamonkey-venkmanUpgrade MozillaThunderbird-translations-other | Dec 12, 2013 | Sep 18, 2013 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Nov 8, 2024 | Sep 18, 2013 |
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