CVE-2023-4049

Published: 1 August 2023

Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Notes

Author	Note
tyhicks	mozjs contains a copy of the SpiderMonkey JavaScript engine
mdeslaur	starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap

Priority

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	trusty	Ignored (end of standard support)
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of standard support)
	jammy	Not vulnerable (code not present)
	upstream	Needs triage
	focal	Released (116.0+build2-0ubuntu0.20.04.2)
	lunar	Not vulnerable (code not present)
thunderbird Launchpad, Ubuntu, Debian	trusty	Ignored (end of standard support)
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of standard support)
	focal	Released (1:102.15.0+build1-0ubuntu0.20.04.1)
	jammy	Released (1:102.15.0+build1-0ubuntu0.22.04.1)
	upstream	Released (102.14,115.1)
	lunar	Released (1:102.15.0+build1-0ubuntu0.23.04.1)
mozjs38 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Needs triage
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Needs triage
mozjs52 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Needs triage
	focal	Needs triage
	jammy	Does not exist
	lunar	Does not exist
	upstream	Needs triage
mozjs68 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Needs triage
	jammy	Does not exist
	lunar	Does not exist
	upstream	Needs triage
mozjs78 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Needs triage
	upstream	Needs triage
mozjs91 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Does not exist
	upstream	Needs triage
mozjs102 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Needs triage
	upstream	Needs triage

Severity score breakdown

Parameter	Value
Base score	5.9
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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