{"containers": {"cna": {"affected": [{"product": "Nextcloud Server Nextcloud Server before 9.0.54 and 10.0.0", "vendor": "n/a", "versions": [{"status": "affected", "version": "Nextcloud Server Nextcloud Server before 9.0.54 and 10.0.0"}]}], "datePublic": "2017-03-27T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "description": "Improper Authorization (CWE-285)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2017-04-03T09:57:01.000Z", "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8"}, {"name": "97287", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/97287"}, {"tags": ["x_refsource_MISC"], "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007"}, {"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/153905"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "support@hackerone.com", "ID": "CVE-2016-9464", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Nextcloud Server Nextcloud Server before 9.0.54 and 10.0.0", "version": {"version_data": [{"version_value": "Nextcloud Server Nextcloud Server before 9.0.54 and 10.0.0"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Improper Authorization (CWE-285)"}]}]}, "references": {"reference_data": [{"name": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0", "refsource": "MISC", "url": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0"}, {"name": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202", "refsource": "MISC", "url": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202"}, {"name": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f", "refsource": "MISC", "url": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f"}, {"name": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8", "refsource": "MISC", "url": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8"}, {"name": "97287", "refsource": "BID", "url": "http://www.securityfocus.com/bid/97287"}, {"name": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007", "refsource": "MISC", "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007"}, {"name": "https://hackerone.com/reports/153905", "refsource": "MISC", "url": "https://hackerone.com/reports/153905"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T02:50:38.553Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8"}, {"name": "97287", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/97287"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/153905"}]}]}, "cveMetadata": {"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "assignerShortName": "hackerone", "cveId": "CVE-2016-9464", "datePublished": "2017-03-28T02:46:00.000Z", "dateReserved": "2016-11-19T00:00:00.000Z", "dateUpdated": "2024-08-06T02:50:38.553Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "D6E3F368-B854-430E-AB8F-496675C4E210", "versionEndExcluding": "9.0.54", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:10.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "A11A2099-3AEC-4622-9ADE-085740EE67C7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group."}, {"lang": "es", "value": "Nextcloud Server en versiones anteriores a 9.0.54 y 10.0.0 sufre de una verificaci\u00f3n de autorizaci\u00f3n incorrecta de los recursos eliminados. El Sharing Backend tal como se implemento en Nextcloud diferencia los compartidos entre usuarios y grupos. En caso de una couta de grupo recibida, los usuarios deben ser capaces de no compartir los archivos con ellos mismos pero no a todo el grupo. La implementaci\u00f3n anterior de la API simplemente no comparti\u00f3 el archivo a todos los uusarios en el grupo."}], "id": "CVE-2016-9464", "lastModified": "2025-04-20T01:37:25.860", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-28T02:59:00.997", "references": [{"source": "support@hackerone.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97287"}, {"source": "support@hackerone.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202"}, {"source": "support@hackerone.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0"}, {"source": "support@hackerone.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f"}, {"source": "support@hackerone.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8"}, {"source": "support@hackerone.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackerone.com/reports/153905"}, {"source": "support@hackerone.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97287"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackerone.com/reports/153905"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-007"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}], "source": "support@hackerone.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-285"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}