CVE-2021-41247

{"containers": {"cna": {"affected": [{"product": "jupyterhub", "vendor": "jupyterhub", "versions": [{"status": "affected", "version": ">= 1.0.0, < 1.5.0 - jupyterhub (pip)"}, {"status": "affected", "version": "< 1.2.0 - jupyterhub (helm)"}]}], "descriptions": [{"lang": "en", "value": "JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place. Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment. The only workaround is to make sure that only one JupyterLab tab is open when you log out."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-613", "description": "CWE-613: Insufficient Session Expiration", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-11-04T17:15:11.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27"}], "source": {"advisory": "GHSA-cw7p-q79f-m2v7", "discovery": "UNKNOWN"}, "title": "incomplete logout in JupyterHub", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-41247", "STATE": "PUBLIC", "TITLE": "incomplete logout in JupyterHub"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "jupyterhub", "version": {"version_data": [{"version_value": ">= 1.0.0, < 1.5.0 - jupyterhub (pip)"}, {"version_value": "< 1.2.0 - jupyterhub (helm)"}]}}]}, "vendor_name": "jupyterhub"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place. Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment. The only workaround is to make sure that only one JupyterLab tab is open when you log out."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-613: Insufficient Session Expiration"}]}]}, "references": {"reference_data": [{"name": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7", "refsource": "CONFIRM", "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7"}, {"name": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27", "refsource": "MISC", "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27"}]}, "source": {"advisory": "GHSA-cw7p-q79f-m2v7", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:08:31.580Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-41247", "datePublished": "2021-11-04T17:15:11.000Z", "dateReserved": "2021-09-15T00:00:00.000Z", "dateUpdated": "2024-08-04T03:08:31.580Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "jupyterhub", "vendor": "jupyterhub", "versions": [{"status": "affected", "version": ">= 1.0.0, < 1.5.0 - jupyterhub (pip)"}, {"status": "affected", "version": "< 1.2.0 - jupyterhub (helm)"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:jupyter:jupyterhub:*:*:*:*:*:*:*:*", "matchCriteriaId": "C44BE321-6186-4786-A3CB-458DDEE2FA1A", "versionEndExcluding": "1.5.0", "versionStartIncluding": "1.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place. Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment. The only workaround is to make sure that only one JupyterLab tab is open when you log out."}, {"lang": "es", "value": "JupyterHub es un servidor multiusuario de c\u00f3digo abierto para cuadernos Jupyter. En las versiones afectadas, los usuarios que presentan varias pesta\u00f1as de JupyterLab abiertas en la misma sesi\u00f3n del navegador, pueden visualizar el cierre de sesi\u00f3n incompleto del servidor monopuesto, ya que las credenciales frescas (s\u00f3lo para el servidor monopuesto, no para el Hub) son restablecidas despu\u00e9s del cierre de sesi\u00f3n, si otra sesi\u00f3n activa de JupyterLab est\u00e1 abierta mientras se produce el cierre de sesi\u00f3n. Actualiza a JupyterHub 1.5. Para los despliegues distribuidos, es jupyterhub en el entorno del _usuario_ el que necesita parches. No es necesario aplicar parches en el entorno del Hub. La \u00fanica soluci\u00f3n es asegurarse de que s\u00f3lo se presenta una pesta\u00f1a de JupyterLab abierta cuando se cierra la sesi\u00f3n"}], "id": "CVE-2021-41247", "lastModified": "2026-06-17T04:08:10.207", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "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": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-11-04T18:15:08.707", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-613"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-613"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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