CVE-2021-3632

Published: Aug 26, 2022Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 1.6 / Impact: 5.9

Source: NVD

Description

A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

Affected (3)

Products: Redhat: Keycloak, Single Sign On

Redhat

2 products

Keycloak

Single Sign On

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Redhat Keycloak	Before 15.1.0
Redhat Single Sign On	Version 7.0

Configuration B

1 vulnerable · 3 platform

Vulnerable Software	Affected Versions
Redhat Single Sign On	From 7.4 to 7.4.9

Running on/with	Platform Versions
Redhat Enterprise Linux	Version 6.0
Redhat Enterprise Linux	Version 7.0
Redhat Enterprise Linux	Version 8.0

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 (10)

https://access.redhat.com/security/cve/CVE-2021-3632

Source: secalert@redhat.com

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1978196

Source: secalert@redhat.com

Issue TrackingVendor Advisory

https://github.com/keycloak/keycloak/commit/65480cb5a11630909c086f79d396004499fbd1e4

Source: secalert@redhat.com

PatchThird Party Advisory

https://github.com/keycloak/keycloak/pull/8203

Source: secalert@redhat.com

Issue TrackingPatchThird Party Advisory

https://issues.redhat.com/browse/KEYCLOAK-18500

Source: secalert@redhat.com

Permissions RequiredVendor Advisory

https://access.redhat.com/security/cve/CVE-2021-3632