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CVE-2019-9791

Published: 20 March 2019

The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
mozjs52
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

xenial Does not exist

impish Does not exist

hirsute Does not exist

jammy Does not exist

groovy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

mantic Does not exist

mozjs60
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Ignored
(end of life)
disco Ignored
(end of life)
impish Does not exist

hirsute Does not exist

jammy Does not exist

eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

firefox
Launchpad, Ubuntu, Debian
impish
Released (66.0+build3-0ubuntu1)
hirsute
Released (66.0+build3-0ubuntu1)
jammy
Released (66.0+build3-0ubuntu1)
bionic
Released (66.0+build3-0ubuntu0.18.04.1)
cosmic
Released (66.0+build3-0ubuntu0.18.10.1)
disco
Released (66.0+build3-0ubuntu1)
eoan
Released (66.0+build3-0ubuntu1)
focal
Released (66.0+build3-0ubuntu1)
groovy
Released (66.0+build3-0ubuntu1)
kinetic
Released (66.0+build3-0ubuntu1)
lunar
Released (66.0+build3-0ubuntu1)
trusty
Released (66.0.1+build1-0ubuntu0.14.04.1)
upstream
Released (66.0)
xenial
Released (66.0+build3-0ubuntu0.16.04.2)
mantic
Released (66.0+build3-0ubuntu1)
thunderbird
Launchpad, Ubuntu, Debian
hirsute
Released (60.6.1+build2-0ubuntu1)
jammy
Released (60.6.1+build2-0ubuntu1)
bionic
Released (1:60.6.1+build2-0ubuntu0.18.04.1)
cosmic
Released (1:60.6.1+build2-0ubuntu0.18.10.1)
disco
Released (60.6.1+build2-0ubuntu1)
eoan
Released (60.6.1+build2-0ubuntu1)
focal
Released (60.6.1+build2-0ubuntu1)
groovy
Released (60.6.1+build2-0ubuntu1)
impish
Released (60.6.1+build2-0ubuntu1)
kinetic
Released (60.6.1+build2-0ubuntu1)
lunar
Released (60.6.1+build2-0ubuntu1)
trusty
Released (1:60.6.1+build2-0ubuntu0.14.04.1)
upstream
Released (60.6)
xenial
Released (1:60.6.1+build2-0ubuntu0.16.04.1)
mantic
Released (60.6.1+build2-0ubuntu1)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H