cnvd - cnvd-2022-20691

CNVD-2022-20691

Vulnerability from cnvd - Published: 2022-03-18

Title

Nextcloud server信息泄露漏洞（CNVD-2022-20691）

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存在信息泄露漏洞，该漏洞源于用户状态API未能考虑管理员的用户枚举设置。攻击者可利用漏洞对于用户进行枚举获取进一步信息。

Severity

中

Patch Name

Nextcloud server信息泄露漏洞（CNVD-2022-20691）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-g722-cm3h-8wrx

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41239

Impacted products

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

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41239",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-41239"
    }
  },
  "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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u72b6\u6001API\u672a\u80fd\u8003\u8651\u7ba1\u7406\u5458\u7684\u7528\u6237\u679a\u4e3e\u8bbe\u7f6e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bf9\u4e8e\u7528\u6237\u8fdb\u884c\u679a\u4e3e\u83b7\u53d6\u8fdb\u4e00\u6b65\u4fe1\u606f\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-g722-cm3h-8wrx",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-20691",
  "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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u72b6\u6001API\u672a\u80fd\u8003\u8651\u7ba1\u7406\u5458\u7684\u7528\u6237\u679a\u4e3e\u8bbe\u7f6e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bf9\u4e8e\u7528\u6237\u8fdb\u884c\u679a\u4e3e\u83b7\u53d6\u8fdb\u4e00\u6b65\u4fe1\u606f\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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2022-20691\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-2021-41239",
  "serverity": "\u4e2d",
  "submitTime": "2022-03-10",
  "title": "Nextcloud server\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2022-20691\uff09"
}

CVE-2021-41239 (GCVE-0-2021-41239)

Vulnerability from cvelistv5 – Published: 2022-03-08 18:05 – Updated: 2025-04-23 18:58

Summary

Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.

Severity ?

5.3 (Medium)


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

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

GitHub_M

References

URL

Tags

	https://github.com/nextcloud/security-advisories/…	x_refsource_CONFIRM
	https://github.com/nextcloud/server/issues/27122	x_refsource_MISC
	https://github.com/nextcloud/server/pull/29260	x_refsource_MISC
	https://security.gentoo.org/glsa/202208-17	vendor-advisoryx_refsource_GENTOO

Impacted products

	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": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:08:31.486Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/issues/27122"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/29260"
          },
          {
            "name": "GLSA-202208-17",
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          }
        ],
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      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-41239",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:57:02.638564Z",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:58:33.406Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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    "cna": {
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          "vendor": "nextcloud",
          "versions": [
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            },
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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      "providerMetadata": {
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          ],
          "url": "https://github.com/nextcloud/server/pull/29260"
        },
        {
          "name": "GLSA-202208-17",
          "tags": [
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          ],
          "url": "https://security.gentoo.org/glsa/202208-17"
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              {
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2022-20691

CVE-2021-41239 (GCVE-0-2021-41239)

Tags

Sightings

Nomenclature