GSD-2023-39952

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2023-39952",
    "id": "GSD-2023-39952"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-39952"
      ],
      "details": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.",
      "id": "GSD-2023-39952",
      "modified": "2023-12-13T01:20:33.474972Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-39952",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
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                    "product_name": "security-advisories",
                    "version": {
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                          "version_affected": "=",
                          "version_value": "\u003e= 22.0.0, \u003c 22.2.10.13"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 23.0.0, \u003c 23.0.12.8"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 24.0.0, \u003c 24.0.12.4"
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                          "version_affected": "=",
                          "version_value": "\u003e= 25.0.0, \u003c 25.0.8"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 26.0.0, \u003c 26.0.3"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 27.0.0, \u003c 27.0.1"
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              "vendor_name": "nextcloud"
            }
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            "value": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
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      },
      "problemtype": {
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          {
            "description": [
              {
                "cweId": "CWE-284",
                "lang": "eng",
                "value": "CWE-284: Improper Access Control"
              }
            ]
          }
        ]
      },
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        "reference_data": [
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjq",
            "refsource": "MISC",
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjq"
          },
          {
            "name": "https://github.com/nextcloud/groupfolders/issues/1906",
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          },
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            "url": "https://github.com/nextcloud/server/pull/38890"
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            "name": "https://hackerone.com/reports/1808079",
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            "url": "https://hackerone.com/reports/1808079"
          }
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      },
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        "advisory": "GHSA-cq8w-v4fh-4rjq",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:-:*:*:*",
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                "versionEndExcluding": "23.0.12.8",
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              },
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          "ID": "CVE-2023-39952"
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        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-284"
                }
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        "references": {
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            {
              "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjq",
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            },
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              "name": "https://hackerone.com/reports/1808079",
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              "tags": [
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            },
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            }
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      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-08-16T20:23Z",
      "publishedDate": "2023-08-10T14:15Z"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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