{"containers": {"cna": {"affected": [{"product": "keycloak", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in v18.0.0"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "description": "CWE-287 - Improper Authentication", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-23T15:52:50", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, {"tags": ["x_refsource_MISC"], "url": "https://access.redhat.com/security/cve/CVE-2021-3827"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2021-3827", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "keycloak", "version": {"version_data": [{"version_value": "Fixed in v18.0.0"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-287 - Improper Authentication"}]}]}, "references": {"reference_data": [{"name": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v", "refsource": "MISC", "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"}, {"name": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d", "refsource": "MISC", "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"}, {"name": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, {"name": "https://access.redhat.com/security/cve/CVE-2021-3827", "refsource": "MISC", "url": "https://access.redhat.com/security/cve/CVE-2021-3827"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:09:09.546Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://access.redhat.com/security/cve/CVE-2021-3827"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-3827", "datePublished": "2022-08-23T15:52:50", "dateReserved": "2021-09-24T00:00:00", "dateUpdated": "2024-08-03T17:09:09.546Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*", "matchCriteriaId": "EC308493-1A81-4D85-B568-ECAA9AE15A82", "versionEndExcluding": "18.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:single_sign-on:7.5.0:*:*:*:*:*:*:*", "matchCriteriaId": "A69E9AB7-AC48-4448-BE34-68AC0AA0CD46", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": false}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*", "matchCriteriaId": "053C1B35-3869-41C2-9551-044182DE0A64", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.8:*:*:*:*:*:*:*", "matchCriteriaId": "91B493F0-5542-49F7-AAAE-E6CA6E468D7B", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:*", "matchCriteriaId": "81609549-25CE-4C8A-9DE3-170D23704208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity."}, {"lang": "es", "value": "Se ha encontrado un fallo en keycloak, en el que el flujo de vinculaci\u00f3n ECP por defecto permite omitir otros flujos de autenticaci\u00f3n. Al explotar este comportamiento, un atacante puede omitir la autenticaci\u00f3n MFA mediante el env\u00edo de una petici\u00f3n SOAP con un encabezado AuthnRequest y Authorization con las credenciales del usuario. La mayor amenaza de esta vulnerabilidad es para la confidencialidad y la integridad."}], "id": "CVE-2021-3827", "lastModified": "2024-11-21T06:22:33.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-23T16:15:10.030", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-3827"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-3827"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Aaron Sachau (SRAM) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2022:0151", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.5::el7", "package": "rh-sso7-keycloak-0:15.0.4-1.redhat_00001.1.el7sso", "product_name": "Red Hat Single Sign-On 7.5 for RHEL 7", "release_date": "2022-01-17T00:00:00Z"}, {"advisory": "RHSA-2022:0152", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7.5::el8", "package": "rh-sso7-keycloak-0:15.0.4-1.redhat_00001.1.el8sso", "product_name": "Red Hat Single Sign-On 7.5 for RHEL 8", "release_date": "2022-01-17T00:00:00Z"}, {"advisory": "RHSA-2022:0164", "cpe": "cpe:/a:redhat:rhosemc:1.0::el8", "package": "rh-sso-7/sso75-openshift-rhel8:7.5-15", "product_name": "RHEL-8 based Middleware Containers", "release_date": "2022-01-18T00:00:00Z"}, {"advisory": "RHSA-2022:0155", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "package": "keycloak-server-spi-private", "product_name": "RHSSO 7.5.1", "release_date": "2022-01-17T00:00:00Z"}], "bugzilla": {"description": "keycloak-server-spi-private: ECP SAML binding bypasses authentication flows", "id": "2007512", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-287", "details": ["A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.", "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity."], "name": "CVE-2021-3827", "package_state": [{"cpe": "cpe:/a:redhat:amq_online:1", "fix_state": "Out of support scope", "package_name": "keycloak-server-spi-private", "product_name": "Red Hat A-MQ Online"}], "public_date": "2021-09-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3827\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3827\nhttps://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"], "threat_severity": "Moderate"}