CVE-2019-11756

Description

Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mozjs38	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs52	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Ignored
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
firefox	24.04 LTS noble	Fixed 71.0+build5-0ubuntu1
	23.10 mantic	Fixed 71.0+build5-0ubuntu1
	23.04 lunar	Fixed 71.0+build5-0ubuntu1
	22.10 kinetic	Fixed 71.0+build5-0ubuntu1
	22.04 LTS jammy	Fixed 71.0+build5-0ubuntu1
	21.10 impish	Fixed 71.0+build5-0ubuntu1
	21.04 hirsute	Fixed 71.0+build5-0ubuntu1
	20.10 groovy	Fixed 71.0+build5-0ubuntu1
	20.04 LTS focal	Fixed 71.0+build5-0ubuntu1
	19.10 eoan	Fixed 71.0+build5-0ubuntu0.19.10.1
	19.04 disco	Fixed 71.0+build5-0ubuntu0.19.04.1
	18.04 LTS bionic	Fixed 71.0+build5-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 71.0+build5-0ubuntu0.16.04.1
	14.04 LTS trusty	Not in release
mozjs60	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	8.8 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-4216-2
Firefox vulnerabilities
13 December 2019

USN-4216-1
Firefox vulnerabilities
9 December 2019