CVE-2023-34415

Published: Jun 19, 2023Modified: Jun 17, 2026

6.1

Vector

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

Exploitability: 2.8 / Impact: 2.7

Source: NVD

Description

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.

Affected (1)

Products: Mozilla: Firefox

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 114.0

Related CWEs

URL Redirection to Untrusted Site ('Open Redirect')

A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

References (6)

https://bugzilla.mozilla.org/show_bug.cgi?id=1811999

Source: security@mozilla.org

Permissions Required

https://security.gentoo.org/glsa/202401-10

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2023-20/

Source: security@mozilla.org

Vendor Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1811999

Source: af854a3a-2127-422b-91ae-364da2661108

Permissions Required

https://security.gentoo.org/glsa/202401-10

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.mozilla.org/security/advisories/mfsa2023-20/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.