CVE-2019-11744

Firefox ESR: Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without…

CVE-2019-11744 is fixed in 11 products on 2 platforms, first by firefox 69.0+build2-0ubuntu0.18.04.1, released September 3, 2019. It is not reported as exploited. Patch Radar priority: Routine.

RoutineFixed on 2 platforms
CVSS
6.1
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0145
73rd percentile

Some HTML elements, such as &lt;title&gt; and &lt;textarea&gt;, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Mozilla Firefox ESR (en-US) 78.0esr Mozilla Firefox ESR (en-US) 78.0esr Jun 25, 2020
Linux
firefox · RHEL 8 0:68.1.0-1.el8_0 RHSA-2019:2663 Sep 4, 2019
firefox · Ubuntu 18.04.6 LTS (bionic) 69.0+build2-0ubuntu0.18.04.1 firefox 69.0+build2-0ubuntu0.18.04.1 Sep 3, 2019
firefox · ol 8 0:68.1.0-1.0.1.el8_0 ELSA-2019-2663 Sep 6, 2019
firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) 69.0+build2-0ubuntu0.18.04.1 firefox-geckodriver 69.0+build2-0ubuntu0.18.04.1 Sep 3, 2019
firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 69.0+build2-0ubuntu0.18.04.1 firefox-mozsymbols 69.0+build2-0ubuntu0.18.04.1 Sep 3, 2019
thunderbird · RHEL 8 0:60.9.0-2.el8_0 RHSA-2019:2774 Sep 16, 2019
thunderbird · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 thunderbird 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
thunderbird · ol 8 0:60.9.0-2.0.1.el8_0 ELSA-2019-2774 Sep 17, 2019
thunderbird-globalmenu · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 thunderbird-globalmenu 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 thunderbird-gnome-support 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 thunderbird-mozsymbols 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 xul-ext-calendar-timezones 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 xul-ext-gdata-provider 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019
xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) 1:60.9.0+build1-0ubuntu0.18.04.1 xul-ext-lightning 1:60.9.0+build1-0ubuntu0.18.04.1 Sep 27, 2019

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