gsd-2023-6563
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2023-6563", "id": "GSD-2023-6563" }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2023-6563" ], "details": "An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (\u003e 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the \"consents\" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.", "id": "GSD-2023-6563", "modified": "2023-12-13T01:20:32.975248Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2023-6563", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Red Hat Single Sign-On 7.6 for RHEL 7", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "0:18.0.11-2.redhat_00003.1.el7sso", "versionType": "rpm" } ] } } ] } }, { "product_name": "Red Hat Single Sign-On 7.6 for RHEL 8", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "0:18.0.11-2.redhat_00003.1.el8sso", "versionType": "rpm" } ] } } ] } }, { "product_name": "Red Hat Single Sign-On 7.6 for RHEL 9", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "0:18.0.11-2.redhat_00003.1.el9sso", "versionType": "rpm" } ] } } ] } }, { "product_name": "RHEL-8 based Middleware Containers", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "7.6-38", "versionType": "rpm" } ] } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "7.6.6-2", "versionType": "rpm" } ] } } ] } }, { "product_name": "Single Sign-On 7.6.6", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Build of Keycloak", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] }, "vendor_name": "Red Hat" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (\u003e 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the \"consents\" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system." } ] }, "impact": { "cvss": [ { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.1" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "cweId": "CWE-770", "lang": "eng", "value": "Allocation of Resources Without Limits or Throttling" } ] } ] }, "references": { "reference_data": [ { "name": "https://access.redhat.com/errata/RHSA-2023:7854", "refsource": "MISC", "url": "https://access.redhat.com/errata/RHSA-2023:7854" }, { "name": "https://access.redhat.com/errata/RHSA-2023:7855", "refsource": "MISC", "url": "https://access.redhat.com/errata/RHSA-2023:7855" }, { "name": "https://access.redhat.com/errata/RHSA-2023:7856", "refsource": "MISC", "url": "https://access.redhat.com/errata/RHSA-2023:7856" }, { "name": "https://access.redhat.com/errata/RHSA-2023:7857", "refsource": "MISC", "url": "https://access.redhat.com/errata/RHSA-2023:7857" }, { "name": "https://access.redhat.com/errata/RHSA-2023:7858", "refsource": "MISC", "url": "https://access.redhat.com/errata/RHSA-2023:7858" }, { "name": "https://access.redhat.com/security/cve/CVE-2023-6563", "refsource": "MISC", "url": "https://access.redhat.com/security/cve/CVE-2023-6563" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2253308", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253308" }, { "name": "https://github.com/keycloak/keycloak/issues/13340", "refsource": "MISC", "url": "https://github.com/keycloak/keycloak/issues/13340" } ] }, "work_around": [ { "lang": "en", "value": "There are three main options to prevent exploitation:\n1) If you are using a reverse proxy, block the consents URL.\n2) This option is less effective: remove the consents application tab from the account console theme.\n3) This option has a significant negative impact on end users: entirely disable offline user profiles." } ] }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*", "matchCriteriaId": "DD663F41-3B6D-4AF0-9ABA-1F3BF292C632", "versionEndExcluding": "21.0.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ] }, { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:redhat:single_sign-on:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "2DEC61BC-E699-456E-99B6-C049F2A5F23F", "vulnerable": true } ], "negate": false, "operator": "OR" }, { "cpeMatch": [ { "criteria": 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"nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.9:*:*:*:*:*:*:*", "matchCriteriaId": "8C519B1A-1CD6-426C-9339-F28E4FEF581B", "vulnerable": true }, { "criteria": "cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.10:*:*:*:*:*:*:*", "matchCriteriaId": "91EE3858-A648-44B4-B282-8F808D88D3B9", "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": "An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (\u003e 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the \"consents\" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system." }, { "lang": "es", "value": "Se descubri\u00f3 una vulnerabilidad de consumo de memoria sin restricciones en Keycloak. Se puede activar en entornos que tienen millones de tokens fuera de l\u00ednea (\u0026gt; 500.000 usuarios, cada uno con al menos 2 sesiones guardadas). Si un atacante crea dos o m\u00e1s sesiones de usuario y luego abre la pesta\u00f1a \"consentimientos\" de la interfaz de usuario del administrador, la interfaz de usuario intenta cargar una gran cantidad de sesiones de clientes fuera de l\u00ednea, lo que genera un consumo excesivo de memoria y CPU, lo que potencialmente podr\u00eda bloquear todo el sistema." } ], "id": "CVE-2023-6563", "lastModified": "2023-12-27T18:49:44.490", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "secalert@redhat.com", "type": "Secondary" } ] }, "published": "2023-12-14T18:15:45.540", "references": [ { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2023:7854" }, { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2023:7855" }, { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2023:7856" }, { "source": "secalert@redhat.com", "tags": [ "Exploit" ], "url": "https://access.redhat.com/errata/RHSA-2023:7857" }, { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2023:7858" }, { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/security/cve/CVE-2023-6563" }, { "source": "secalert@redhat.com", "tags": [ "Issue Tracking" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253308" }, { "source": "secalert@redhat.com", "tags": [ "Issue Tracking" ], "url": "https://github.com/keycloak/keycloak/issues/13340" } ], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-770" } ], "source": "nvd@nist.gov", "type": "Primary" }, { "description": [ { "lang": "en", "value": "CWE-770" } ], "source": "secalert@redhat.com", "type": "Secondary" } ] } } } }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.