cnvd - cnvd-2021-51799

cnvd-2021-51799

Vulnerability from cnvd

Title: Nextcloud存在未明漏洞（CNVD-2021-51799）

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在19.0.13、20.011和21.0.3之前的版本存在安全漏洞，该漏洞源于删除用户后不会删除webauthn令牌。如果受害者重复使用以前使用过的用户名，以前的用户就可以访问他们的帐户。目前没有详细漏洞细节提供。

Severity: 高

Patch Name: Nextcloud存在未明漏洞（CNVD-2021-51799）的补丁

Patch 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在19.0.13、20.011和21.0.3之前的版本存在安全漏洞，该漏洞源于删除用户后不会删除webauthn令牌。如果受害者重复使用以前使用过的用户名，以前的用户就可以访问他们的帐户。目前没有详细漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg

Reference: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg

Impacted products

Name
['Nextcloud Nextcloud Server 19.0.13', 'Nextcloud Nextcloud Server <21.0.3', 'Nextcloud Nextcloud Server 20.011']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-32726",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-32726"
    }
  },
  "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\u3002\n\nNextcloud Server\u572819.0.13\u300120.011\u548c21.0.3\u4e4b\u524d\u7684\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5220\u9664\u7528\u6237\u540e\u4e0d\u4f1a\u5220\u9664webauthn\u4ee4\u724c\u3002\u5982\u679c\u53d7\u5bb3\u8005\u91cd\u590d\u4f7f\u7528\u4ee5\u524d\u4f7f\u7528\u8fc7\u7684\u7528\u6237\u540d\uff0c\u4ee5\u524d\u7684\u7528\u6237\u5c31\u53ef\u4ee5\u8bbf\u95ee\u4ed6\u4eec\u7684\u5e10\u6237\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-51799",
  "openTime": "2021-07-19",
  "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\u3002\r\n\r\nNextcloud Server\u572819.0.13\u300120.011\u548c21.0.3\u4e4b\u524d\u7684\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5220\u9664\u7528\u6237\u540e\u4e0d\u4f1a\u5220\u9664webauthn\u4ee4\u724c\u3002\u5982\u679c\u53d7\u5bb3\u8005\u91cd\u590d\u4f7f\u7528\u4ee5\u524d\u4f7f\u7528\u8fc7\u7684\u7528\u6237\u540d\uff0c\u4ee5\u524d\u7684\u7528\u6237\u5c31\u53ef\u4ee5\u8bbf\u95ee\u4ed6\u4eec\u7684\u5e10\u6237\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-51799\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud Server 19.0.13",
      "Nextcloud Nextcloud Server \u003c21.0.3",
      "Nextcloud Nextcloud Server 20.011"
    ]
  },
  "referenceLink": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg",
  "serverity": "\u9ad8",
  "submitTime": "2021-07-15",
  "title": "Nextcloud\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-51799\uff09"
}

CVE-2021-32726 (GCVE-0-2021-32726)

Vulnerability from cvelistv5

Published

2021-07-12 19:45

Modified

2024-08-03 23:33

Severity ?

7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-708 - Incorrect Ownership Assignment

Summary

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

References

▼	URL	Tags
	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg	x_refsource_CONFIRM
	https://github.com/nextcloud/server/pull/27532	x_refsource_MISC
	https://hackerone.com/reports/1202590	x_refsource_MISC
	https://security.gentoo.org/glsa/202208-17	vendor-advisory, x_refsource_GENTOO

Impacted products

	Vendor	Product	Version
	nextcloud	security-advisories	Version: < 19.0.13 Version: >= 20.0.0, < 20.0.11 Version: >= 21.0.0, < 21.0.3

Show details on NVD website

JSON

To clipboard

{
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            "tags": [
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            ],
            "url": "https://github.com/nextcloud/server/pull/27532"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1202590"
          },
          {
            "name": "GLSA-202208-17",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
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            ],
            "url": "https://security.gentoo.org/glsa/202208-17"
          }
        ],
        "title": "CVE Program Container"
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    ],
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          "product": "security-advisories",
          "vendor": "nextcloud",
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            {
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            },
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              "status": "affected",
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            },
            {
              "status": "affected",
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      ],
      "descriptions": [
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        }
      ],
      "metrics": [
        {
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      "providerMetadata": {
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          "name": "GLSA-202208-17",
          "tags": [
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          ],
          "url": "https://security.gentoo.org/glsa/202208-17"
        }
      ],
      "source": {
        "advisory": "GHSA-6qr9-c846-j8mg",
        "discovery": "UNKNOWN"
      },
      "title": "Webauthn tokens not removed after user has been deleted",
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        },
        "affects": {
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                            "version_value": "\u003e= 20.0.0, \u003c 20.0.11"
                          },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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