CVE-2023-2422

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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."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en Keycloak. Un servidor Keycloak configurado para admitir la autenticaci\u00f3n mTLS para clientes OAuth/OpenID no verifica correctamente la cadena de certificados del cliente. Un cliente que posee un certificado adecuado puede autorizarse como cualquier otro cliente, por tanto, acceder a datos que pertenecen a otros clientes."}], "id": "CVE-2023-2422", "lastModified": "2026-06-17T05:52:33.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 4.2, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-2422", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-03T18:15:34.385890Z", "version": "2.0.3"}}]}, "published": "2023-10-04T11:15:10.157", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3883"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3884"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3885"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3888"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3892"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2023-2422"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2191668"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3883"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3884"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3885"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3888"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2023:3892"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2023-2422"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2191668"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2023:3892", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.6.4", "package": "keycloak-oauth", "product_name": "Red Hat Single Sign-On 7", "release_date": "2023-06-27T00:00:00Z"}, {"advisory": "RHSA-2023:3883", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.6::el7", "package": "rh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el7sso", "product_name": "Red Hat Single Sign-On 7.6 for RHEL 7", "release_date": "2023-06-27T00:00:00Z"}, {"advisory": "RHSA-2023:3884", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.6::el8", "package": "rh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el8sso", "product_name": "Red Hat Single Sign-On 7.6 for RHEL 8", "release_date": "2023-06-27T00:00:00Z"}, {"advisory": "RHSA-2023:3885", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.6::el9", "package": "rh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el9sso", "product_name": "Red Hat Single Sign-On 7.6 for RHEL 9", "release_date": "2023-06-27T00:00:00Z"}, {"advisory": "RHSA-2023:3888", "cpe": "cpe:/a:redhat:rhosemc:1.0::el8", "package": "rh-sso-7/sso76-openshift-rhel8:7.6-24", "product_name": "RHEL-8 based Middleware Containers", "release_date": "2023-06-27T00:00:00Z"}], "bugzilla": {"description": "keycloak: oauth client impersonation", "id": "2191668", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2191668"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N", "status": "verified"}, "cwe": "CWE-295", "details": ["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.", "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."], "name": "CVE-2023-2422", "public_date": "2023-06-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-2422\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-2422"], "threat_severity": "Moderate"}

{}