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CVE-2019-11763

Published: 23 October 2019

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine
Priority

Medium

CVSS 3 base score: 6.1

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic
Released (70.0+build2-0ubuntu0.18.04.1)
disco
Released (70.0+build2-0ubuntu0.19.04.1)
eoan
Released (70.0+build2-0ubuntu0.19.10.1)
focal
Released (70.0+build2-0ubuntu1)
groovy
Released (70.0+build2-0ubuntu1)
hirsute
Released (70.0+build2-0ubuntu1)
impish
Released (70.0+build2-0ubuntu1)
jammy
Released (70.0+build2-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (70.0)
xenial
Released (70.0+build2-0ubuntu0.16.04.1)
mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

disco Ignored
(reached end-of-life)
eoan Ignored
(reached end-of-life)
focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs60
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Ignored
(reached end-of-life)
eoan Ignored
(reached end-of-life)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:68.2.1+build1-0ubuntu0.18.04.1)
disco Ignored
(reached end-of-life)
eoan
Released (1:68.2.1+build1-0ubuntu0.19.10.1)
focal
Released (1:68.2.0+build1.1-0ubuntu1)
groovy
Released (1:68.2.0+build1.1-0ubuntu1)
hirsute
Released (1:68.2.0+build1.1-0ubuntu1)
impish
Released (1:68.2.0+build1.1-0ubuntu1)
jammy
Released (1:68.2.0+build1.1-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (68.2)
xenial
Released (1:68.7.0+build1-0ubuntu0.16.04.2)