CVE-2021-3424
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Redhat Single Sign-on
PublishedJun 1, 2021
First seenJun 1, 2021
Weakness typeCWE-287Improper authentication
How to fix
Update
- org.keycloak:keycloak-services18.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat single_sign-on | 7.4 | — |
| org.keycloak:keycloak-servicesMaven | v < 18.0.0 | 18.0.0 |
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