CVE-2021-3637

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{"affected": [{"affectedData": [{"product": "keycloak-model-infinispan", "vendor": "n/a", "versions": [{"status": "affected", "version": "keycloak 14.0.0"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD3F5CD1-BF3D-45C9-9BEF-CC7A5A40772E", "versionEndExcluding": "14.0.0", "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"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack."}, {"lang": "es", "value": "Se ha encontrado un fallo en keycloak-model-infinispan en keycloak versiones anteriores a 14.0.0, donde el mapa authenticationSessions en RootAuthenticationSessionEntity crece ilimitadamente, lo que podr\u00eda conllevar a un ataque de DoS"}], "id": "CVE-2021-3637", "lastModified": "2026-06-17T04:05:29.093", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-09T11:15:09.997", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979638"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979638"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Halil \u0130brahim \u015eener (hibsener@gmail.com) (Picnic Technologies) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:3534", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "package": "keycloak-model-infinispan", "product_name": "Red Hat Single Sign-On 7.4.9", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3527", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el6", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el6sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 6", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3528", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el7", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el7sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 7", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3529", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el8", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el8sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 8", "release_date": "2021-09-14T00:00:00Z"}], "bugzilla": {"description": "keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly could lead to a DoS attack", "id": "1979638", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979638"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-770", "details": ["A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack.", "A flaw was found in keycloak-model-infinispan where the authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly. This issue leads to a denial of service."], "name": "CVE-2021-3637", "public_date": "2020-12-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3637\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3637"], "threat_severity": "Moderate"}

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