CVE-2023-34415

Publication date 7 June 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

When choosing a site-isolated process for a document loaded from a data: URL that was the result of a redirect, Firefox would load that document in the same process as the site that issued the redirect. This bypassed the site-isolation protections against Spectre-like attacks on sites that host an "open redirect". Firefox no longer follows HTTP redirects to data: URLs. This vulnerability affects Firefox < 114.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Fixed 114.0+build3-0ubuntu0.20.04.1
	18.04 LTS bionic	Ignored end of standard support
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support
thunderbird	23.04 lunar	Not affected
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Ignored end of standard support
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

Notes

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

Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-6143-1
Firefox vulnerabilities
7 June 2023