Vulnerability-Lookup

CNVD-2022-20692

Vulnerability from cnvd - Published: 2022-03-18

Title

Nextcloud server授权问题漏洞（CNVD-2022-20692）

Description

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。Nextcloud server是一个自托管系统，旨在提供云风格的服务。 Nextcloud server存在授权问题漏洞，该漏洞源于对于特定子文件缺乏权限检查。攻击者可利用该漏洞通过将组文件夹复制到另一个位置来未授权访问这些子文件夹。

Severity

中

Patch Name

Nextcloud server授权问题漏洞（CNVD-2022-20692）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41241

Impacted products

Name
['Nextcloud Nextcloud Server <20.0.14', 'Nextcloud Nextcloud Server >=21.0.0，<21.0.6', 'Nextcloud Nextcloud Server 22.2.0']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41241",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-41241"
    }
  },
  "description": "Nextcloud\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u81ea\u6258\u7ba1\u6587\u4ef6\u540c\u6b65\u548c\u5171\u4eab\u7684\u901a\u4fe1\u5e94\u7528\u5e73\u53f0\u3002Nextcloud server\u662f\u4e00\u4e2a\u81ea\u6258\u7ba1\u7cfb\u7edf\uff0c\u65e8\u5728\u63d0\u4f9b\u4e91\u98ce\u683c\u7684\u670d\u52a1\u3002\n\nNextcloud server\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u4e8e\u7279\u5b9a\u5b50\u6587\u4ef6\u7f3a\u4e4f\u6743\u9650\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5c06\u7ec4\u6587\u4ef6\u5939\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u4f4d\u7f6e\u6765\u672a\u6388\u6743\u8bbf\u95ee\u8fd9\u4e9b\u5b50\u6587\u4ef6\u5939\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-20692",
  "openTime": "2022-03-18",
  "patchDescription": "Nextcloud\u662f\u5fb7\u56fdNextcloud\u516c\u53f8\u7684\u4e00\u5957\u5f00\u6e90\u7684\u81ea\u6258\u7ba1\u6587\u4ef6\u540c\u6b65\u548c\u5171\u4eab\u7684\u901a\u4fe1\u5e94\u7528\u5e73\u53f0\u3002Nextcloud server\u662f\u4e00\u4e2a\u81ea\u6258\u7ba1\u7cfb\u7edf\uff0c\u65e8\u5728\u63d0\u4f9b\u4e91\u98ce\u683c\u7684\u670d\u52a1\u3002\r\n\r\nNextcloud server\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u4e8e\u7279\u5b9a\u5b50\u6587\u4ef6\u7f3a\u4e4f\u6743\u9650\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5c06\u7ec4\u6587\u4ef6\u5939\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u4f4d\u7f6e\u6765\u672a\u6388\u6743\u8bbf\u95ee\u8fd9\u4e9b\u5b50\u6587\u4ef6\u5939\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Nextcloud server\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2022-20692\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud Server \u003c20.0.14",
      "Nextcloud Nextcloud Server \u003e=21.0.0\uff0c\u003c21.0.6",
      "Nextcloud Nextcloud Server 22.2.0"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-41241",
  "serverity": "\u4e2d",
  "submitTime": "2022-03-10",
  "title": "Nextcloud server\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2022-20692\uff09"
}

CVE-2021-41241 (GCVE-0-2021-41241)

Vulnerability from cvelistv5 – Published: 2022-03-08 18:25 – Updated: 2025-04-23 18:58

Title

Advanced permissions is not respected for subfolders in Nextcloud server

Summary

Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting "advanced permissions" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the "groupfolders" application in the admin settings.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 14:09 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/nextcloud/security-advisories/…	x_refsource_CONFIRM
https://github.com/nextcloud/groupfolders/issues/1692	x_refsource_MISC
https://github.com/nextcloud/server/pull/29362	x_refsource_MISC
https://security.gentoo.org/glsa/202208-17	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
nextcloud	security-advisories	Affected: < 20.0.14 Affected: >= 21.0.0, < 21.0.6 Affected: >= 22.2.0, < 22.2.1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:08:31.602Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/groupfolders/issues/1692"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/29362"
          },
          {
            "name": "GLSA-202208-17",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-17"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-41241",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T14:09:27.827049Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:58:26.893Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "security-advisories",
          "vendor": "nextcloud",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.0.14"
            },
            {
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            },
            {
              "status": "affected",
              "version": "\u003e= 22.2.0, \u003c 22.2.1"
            }
          ]
        }
      ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
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          ]
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      "providerMetadata": {
        "dateUpdated": "2022-08-11T00:07:53.000Z",
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      },
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        },
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          ],
          "url": "https://github.com/nextcloud/groupfolders/issues/1692"
        },
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          "tags": [
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          ],
          "url": "https://github.com/nextcloud/server/pull/29362"
        },
        {
          "name": "GLSA-202208-17",
          "tags": [
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            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202208-17"
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      ],
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
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                          {
                            "version_value": "\u003c 20.0.14"
                          },
                          {
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                          },
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

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.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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CNVD-2022-20692

CVE-2021-41241 (GCVE-0-2021-41241)

Tags

Sightings

Nomenclature

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