gsd-2023-35928
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
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.
Aliases
Aliases
CVE-2023-35928


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-35928",
    "id": "GSD-2023-35928"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-35928"
      ],
      "details": "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.",
      "id": "GSD-2023-35928",
      "modified": "2023-12-13T01:20:45.899896Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-35928",
        "STATE": "PUBLIC"
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                    "version": {
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                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 20.0.0.0, \u003c 20.0.14.14"
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                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 21.0.0.0, \u003c 21.0.9.12"
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                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 22.0.0.0, \u003c 22.2.10.12"
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                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 23.0.0.0, \u003c 23.0.12.7"
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                          "version_affected": "=",
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                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 25.0.0, \u003c 25.0.7 "
                        },
                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Enterprise Server \u003e= 26.0.0, \u003c 26.0.2"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "Nextcloud Server \u003e= 25.0.0, \u003c 25.0.7"
                        },
                        {
                          "version_affected": "=",
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            "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."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
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                "cweId": "CWE-274",
                "lang": "eng",
                "value": "CWE-274: Improper Handling of Insufficient Privileges"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5h",
            "refsource": "MISC",
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-637g-xp2c-qh5h"
          },
          {
            "name": "https://github.com/nextcloud/server/pull/38265",
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          {
            "name": "https://hackerone.com/reports/1978882",
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            "url": "https://hackerone.com/reports/1978882"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-637g-xp2c-qh5h",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
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                "versionEndExcluding": "26.0.2",
                "versionStartIncluding": "26.0.0",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "21.0.9.12",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "22.2.10.12",
                "versionStartIncluding": "22.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "23.0.12.7",
                "versionStartIncluding": "23.0.0",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
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                "versionEndExcluding": "24.0.12.2",
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              {
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                "cpe_name": [],
                "versionEndExcluding": "20.0.14.14",
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                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
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                "versionStartIncluding": "19.0.0",
                "vulnerable": true
              }
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          "ID": "CVE-2023-35928"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "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."
            }
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      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-07-05T13:30Z",
      "publishedDate": "2023-06-23T21:15Z"
    }
  }
}


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