CVE-2021-3424

Published: Jun 1, 2021Modified: Jun 17, 2026

5.3

Vector

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

Exploitability: 3.9 / Impact: 1.4

Source: NVD

Description

A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.

Affected (1)

Products: Redhat: Single Sign On

Redhat

1 product

Single Sign On

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Redhat Single Sign On	Version 7.4

Related CWEs

CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (2)

https://bugzilla.redhat.com/show_bug.cgi?id=1933320

Source: secalert@redhat.com

Issue TrackingVendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1933320

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

Issue TrackingVendor Advisory

Timeline

No history available yet.