CVE-2021-3424
keycloak
MEDIUM 5.3
At a glance
- Source
- NVD
- EPSS
- EPSS 0.77 % · percentile 56 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-287 — Improper Authentication
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-pf38-cw3p-22q9 — Keycloak is vulnerable to IDN homograph attack
European references
- ENISA EUVD · EUVD-2022-1798
- GCVE · GCVE-0-2021-3424
Affected configurations (NVD CPE)
cpe:2.3:a:redhat:single_sign-on:7.4:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| keycloak | affected as shipped in Red Hat Single Sign-On 7.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |