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CVE-2019-11761

Published: 23 October 2019

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. 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 Severity Score

5.4

Score breakdown

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)
kinetic
Released (70.0+build2-0ubuntu1)
lunar
Released (70.0+build2-0ubuntu1)
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

kinetic Does not exist

lunar 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

kinetic Does not exist

lunar 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

kinetic Does not exist

lunar 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)
kinetic
Released (1:68.2.0+build1.1-0ubuntu1)
lunar
Released (1:68.2.0+build1.1-0ubuntu1)
trusty Does not exist

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

Severity score breakdown

Parameter Value
Base score 5.4
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N