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

Author	Note
tyhicks	mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	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)
	hirsute	Released (66.0+build3-0ubuntu1)
	impish	Released (66.0+build3-0ubuntu1)
	jammy	Released (66.0+build3-0ubuntu1)
	kinetic	Released (66.0+build3-0ubuntu1)
	precise	Does not exist
	trusty	Does not exist (trusty was released [66.0.1+build1-0ubuntu0.14.04.1])
	upstream	Released (66.0)
	xenial	Released (66.0+build3-0ubuntu0.16.04.2)
mozjs38 Launchpad, Ubuntu, Debian	bionic	Needs triage
	cosmic	Does not exist
	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
	precise	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs52 Launchpad, Ubuntu, Debian	bionic	Needs triage
	cosmic	Ignored (reached end-of-life)
	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
	precise	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs60 Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Ignored (reached end-of-life)
	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
	precise	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
thunderbird Launchpad, Ubuntu, Debian	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)
	hirsute	Released (60.6.1+build2-0ubuntu1)
	impish	Released (60.6.1+build2-0ubuntu1)
	jammy	Released (60.6.1+build2-0ubuntu1)
	kinetic	Released (60.6.1+build2-0ubuntu1)
	precise	Does not exist
	trusty	Does not exist (trusty was 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)

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

References

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