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ubuntucveUbuntu.comUB:CVE-2023-34415
HistoryJun 07, 2023 - 12:00 a.m.

CVE-2023-34415

2023-06-0700:00:00
ubuntu.com
ubuntu.com
12
firefox
site-isolation
vulnerability
spectre-like attacks
http redirects
data urls

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

24.1%

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.

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
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchfirefox< 114.0+build3-0ubuntu0.20.04.1UNKNOWN

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

24.1%