Vulnerability-Lookup

CNVD-2020-64600

Vulnerability from cnvd - Published: 2020-11-19

Title

Nextcloud Server权限提升漏洞

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 19.0.0存在安全漏洞，该漏洞源于一个逻辑错误导致特权升级，允许恶意用户重新共享比他们自己获得的更高权限。目前没有详细漏洞细节提供。

Severity

低

Patch Name

Nextcloud Server权限提升漏洞的补丁

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 19.0.0存在安全漏洞，该漏洞源于一个逻辑错误导致特权升级，允许恶意用户重新共享比他们自己获得的更高权限。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://nextcloud.com/security/advisory/?id=NC-SA-2020-029

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8223

Impacted products

Name
Nextcloud Nextcloud Server 19.0.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8223",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8223"
    }
  },
  "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 19.0.0\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e00\u4e2a\u903b\u8f91\u9519\u8bef\u5bfc\u81f4\u7279\u6743\u5347\u7ea7\uff0c\u5141\u8bb8\u6076\u610f\u7528\u6237\u91cd\u65b0\u5171\u4eab\u6bd4\u4ed6\u4eec\u81ea\u5df1\u83b7\u5f97\u7684\u66f4\u9ad8\u6743\u9650\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://nextcloud.com/security/advisory/?id=NC-SA-2020-029",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-64600",
  "openTime": "2020-11-19",
  "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 19.0.0\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e00\u4e2a\u903b\u8f91\u9519\u8bef\u5bfc\u81f4\u7279\u6743\u5347\u7ea7\uff0c\u5141\u8bb8\u6076\u610f\u7528\u6237\u91cd\u65b0\u5171\u4eab\u6bd4\u4ed6\u4eec\u81ea\u5df1\u83b7\u5f97\u7684\u66f4\u9ad8\u6743\u9650\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 Server\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Nextcloud Nextcloud Server 19.0.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-8223",
  "serverity": "\u4f4e",
  "submitTime": "2020-10-20",
  "title": "Nextcloud Server\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2020-8223 (GCVE-0-2020-8223)

Vulnerability from cvelistv5 – Published: 2020-10-05 13:16 – Updated: 2024-08-04 09:56

Summary

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.

Severity

No CVSS data available.

CWE

CWE-269 - Improper Privilege Management (CWE-269)

Assigner

hackerone mitre root

References

4 references

URL	Tags
https://hackerone.com/reports/889243	x_refsource_MISC
https://nextcloud.com/security/advisory/?id=NC-SA…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Impacted products

1 product

Vendor	Product	Version
n/a	Nextcloud Server	Affected: Fixed in 19.0.1

Show details on NVD website

JSON

To clipboard

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            "url": "https://hackerone.com/reports/889243"
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-029"
          },
          {
            "name": "FEDORA-2020-c9863904de",
            "tags": [
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          },
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            "tags": [
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          }
        ],
        "title": "CVE Program Container"
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    "cna": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched 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.

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.
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CNVD-2020-64600

CVE-2020-8223 (GCVE-0-2020-8223)

Tags

Sightings

Nomenclature

Related by attack behaviour