Keycloak: oauth client impersonation (Red Hat Red Hat Single Sign-On 7)

CVE-2023-2422

MEDIUM 5.5

En bref

Source: NVD
EPSS: EPSS 0.52 % · centile 44 (2026-10-30)
État: PUBLISHED
Publiée: 2023-10-04 10:59 UTC
Mise à jour: 2024-08-02 06:19 UTC
Attribuée par: redhat
Statut NVD: Modified

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Description

A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.

Faiblesses (CWE)

CWE-295 — Validation incorrecte de certificat

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N	redhat
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N	NVD · secalert@redhat.com (Secondary)
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N	NVD · nvd@nist.gov (Primary)

Avis

GHSA-3qh5-qqj2-c78f — Keycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients

Références européennes

ENISA EUVD · EUVD-2023-1672
GCVE · GCVE-0-2023-2422

Configurations affectées (CPE NVD)

cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.10:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.11:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:*
cpe:2.3:a:redhat:single_sign-on:7.6:*:*:*:*:*:*:*

Produits affectés

Produit	Versions
Red Hat · Red Hat Single Sign-On 7
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7	unaffected 0:18.0.8-1.redhat_00001.1.el7sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8	unaffected 0:18.0.8-1.redhat_00001.1.el8sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9	unaffected 0:18.0.8-1.redhat_00001.1.el9sso < *
Red Hat · RHEL-8 based Middleware Containers	unaffected 7.6-24 < *

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

🟡 Keycloak: oauth client impersonation (Red Hat Red Hat Single Sign-On 7)