CVE-2018-12387

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	24.04 LTS noble	Fixed 62.0.3+build1-0ubuntu1
	23.10 mantic	Fixed 62.0.3+build1-0ubuntu1
	23.04 lunar	Fixed 62.0.3+build1-0ubuntu1
	22.10 kinetic	Fixed 62.0.3+build1-0ubuntu1
	22.04 LTS jammy	Fixed 62.0.3+build1-0ubuntu1
	21.10 impish	Fixed 62.0.3+build1-0ubuntu1
	21.04 hirsute	Fixed 62.0.3+build1-0ubuntu1
	20.10 groovy	Fixed 62.0.3+build1-0ubuntu1
	20.04 LTS focal	Fixed 62.0.3+build1-0ubuntu1
	19.10 eoan	Fixed 62.0.3+build1-0ubuntu1
	19.04 disco	Fixed 62.0.3+build1-0ubuntu1
	18.10 cosmic	Fixed 62.0.3+build1-0ubuntu1
	18.04 LTS bionic	Fixed 62.0.3+build1-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 62.0.3+build1-0ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 62.0.3+build1-0ubuntu0.14.04.2
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
	18.10 cosmic	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
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
thunderbird	24.04 LTS noble	Fixed 1:60.4.0+build2-0ubuntu1
	23.10 mantic	Fixed 1:60.4.0+build2-0ubuntu1
	23.04 lunar	Fixed 1:60.4.0+build2-0ubuntu1
	22.10 kinetic	Fixed 1:60.4.0+build2-0ubuntu1
	22.04 LTS jammy	Fixed 1:60.4.0+build2-0ubuntu1
	21.10 impish	Fixed 1:60.4.0+build2-0ubuntu1
	21.04 hirsute	Fixed 1:60.4.0+build2-0ubuntu1
	20.10 groovy	Fixed 1:60.4.0+build2-0ubuntu1
	20.04 LTS focal	Fixed 1:60.4.0+build2-0ubuntu1
	19.10 eoan	Fixed 1:60.4.0+build2-0ubuntu1
	19.04 disco	Fixed 1:60.4.0+build2-0ubuntu1
	18.10 cosmic	Fixed 1:60.4.0+build2-0ubuntu0.18.10.1
	18.04 LTS bionic	Fixed 1:60.4.0+build2-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 1:60.4.0+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 1:60.4.0+build2-0ubuntu0.14.04.1

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

Parameter	Value
Base score	9.1 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3778-1
Firefox vulnerabilities
3 October 2018