cve-2023-35928
Vulnerability from cvelistv5
Published
2023-06-23 20:58
Modified
2024-12-05 16:18
Severity ?
8.4 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
Summary
Nextcloud Server is a space for data storage on Nextcloud, a self-hosted productivity playform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 19.0.0 until 19.0.13.9, 20.0.0 until 20.0.14.14, 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, a user could use this functionality to get access to the login credentials of another user and take over their account. This issue has been patched in Nextcloud Server versions 25.0.7 and 26.0.2 and NextCloud Enterprise Server versions 19.0.13.9, 20.0.14.14, 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2. Three workarounds are available. Disable app files_external. Change config setting "Allow users to mount external storage" to disabled in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages`. Change config setting to disallow users to create external storages in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` with the types FTP, Nextcloud, SFTP, and/or WebDAV.
References
security-advisories@github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5hVendor Advisory
security-advisories@github.comhttps://github.com/nextcloud/server/pull/38265Issue Tracking
security-advisories@github.comhttps://hackerone.com/reports/1978882Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5hVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/server/pull/38265Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1978882Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-35928\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2023-06-23T21:15:10.007\",\"lastModified\":\"2024-11-21T08:08:59.697\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Nextcloud Server is a space for data storage on Nextcloud, a self-hosted productivity playform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 19.0.0 until 19.0.13.9, 20.0.0 until 20.0.14.14, 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, a user could use this functionality to get access to the login credentials of another user and take over their account. This issue has been patched in Nextcloud Server versions 25.0.7 and 26.0.2 and NextCloud Enterprise Server versions 19.0.13.9, 20.0.14.14, 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2.\\n\\nThree workarounds are available. Disable app files_external. Change config setting \\\"Allow users to mount external storage\\\" to disabled in \\\"Administration\\\" \u003e \\\"External storage\\\" settings `\u2026/index.php/settings/admin/externalstorages`. Change config setting to disallow users to create external storages in \\\"Administration\\\" \u003e \\\"External storage\\\" settings `\u2026/index.php/settings/admin/externalstorages` with the types FTP, Nextcloud, SFTP, and/or WebDAV.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H\",\"baseScore\":8.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.7,\"impactScore\":6.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-274\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"19.0.0\",\"versionEndExcluding\":\"19.0.13.9\",\"matchCriteriaId\":\"CC2A5AD6-483F-495C-87CF-2D2B6C4D9903\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"20.0.0\",\"versionEndExcluding\":\"20.0.14.14\",\"matchCriteriaId\":\"1F2E75AF-BECF-4A13-A2F4-6882F4AFE8F6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"21.0.0\",\"versionEndExcluding\":\"21.0.9.12\",\"matchCriteriaId\":\"C3851B67-74A7-4D1D-8B7C-F5A0075B2700\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"22.0.0\",\"versionEndExcluding\":\"22.2.10.12\",\"matchCriteriaId\":\"C5FA775A-1796-4C82-B943-CEC91FDA6A00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"23.0.0\",\"versionEndExcluding\":\"23.0.12.7\",\"matchCriteriaId\":\"57E82EBA-930D-4B32-B2B5-3B7119C2EF8F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"24.0.0\",\"versionEndExcluding\":\"24.0.12.2\",\"matchCriteriaId\":\"9603AC3F-5104-4C18-BF51-25B52BC7E146\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"25.0.0\",\"versionEndExcluding\":\"25.0.7\",\"matchCriteriaId\":\"DD58A3B6-945E-4AFC-AE5C-A374C884167B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"25.0.0\",\"versionEndExcluding\":\"25.0.7\",\"matchCriteriaId\":\"7AC695D0-BD79-42B5-BA1D-3356791E4DEC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"26.0.0\",\"versionEndExcluding\":\"26.0.2\",\"matchCriteriaId\":\"CB3473C7-E5B9-44B1-AC74-F7224D9AB78B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"26.0.0\",\"versionEndExcluding\":\"26.0.2\",\"matchCriteriaId\":\"AE95CF9F-D964-4857-8805-2CE4CF2F6328\"}]}]}],\"references\":[{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5h\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/38265\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://hackerone.com/reports/1978882\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5h\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/38265\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://hackerone.com/reports/1978882\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
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In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 19.0.0 until 19.0.13.9, 20.0.0 until 20.0.14.14, 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, a user could use this functionality to get access to the login credentials of another user and take over their account. This issue has been patched in Nextcloud Server versions 25.0.7 and 26.0.2 and NextCloud Enterprise Server versions 19.0.13.9, 20.0.14.14, 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2.\\n\\nThree workarounds are available. Disable app files_external. Change config setting \\\"Allow users to mount external storage\\\" to disabled in \\\"Administration\\\" \u003e \\\"External storage\\\" settings `\\u2026/index.php/settings/admin/externalstorages`. Change config setting to disallow users to create external storages in \\\"Administration\\\" \u003e \\\"External storage\\\" settings `\\u2026/index.php/settings/admin/externalstorages` with the types FTP, Nextcloud, SFTP, and/or WebDAV.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-274\", \"description\": \"CWE-274: Improper Handling of Insufficient Privileges\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2023-06-23T20:58:33.225Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-35928\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-05T16:18:09.131Z\", \"dateReserved\": \"2023-06-20T14:02:45.593Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2023-06-23T20:58:33.225Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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