Vulnerability-Lookup

CNVD-2017-04915

Vulnerability from cnvd - Published: 2017-04-21

Title

Nextcloud配额限制绕过漏洞

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是其中的一个服务器版。 Nextcloud Server 9.0.55之前的版本和10.0.2之前的版本中存在安全漏洞，该漏洞源于程序未能正确的过滤'OC-Total-Length' HTTP头提供的值。攻击者可利用该漏洞绕过限制，使用更多的空间。

Severity

中

Patch Name

Nextcloud配额限制绕过漏洞的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://nextcloud.com/security/advisory/?id=nc-sa-2017-005

Reference

https://nextcloud.com/security/advisory/?id=nc-sa-2017-005 https://nvd.nist.gov/vuln/detail/CVE-2017-0887

Impacted products

Name
['Nextcloud Nextcloud Server <9.0.55', 'Nextcloud Nextcloud Server 10.0.2']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-0887"
    }
  },
  "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\u5176\u4e2d\u7684\u4e00\u4e2a\u670d\u52a1\u5668\u7248\u3002\r\n\r\nNextcloud Server 9.0.55\u4e4b\u524d\u7684\u7248\u672c\u548c10.0.2\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u8fc7\u6ee4\u0027OC-Total-Length\u0027 HTTP\u5934\u63d0\u4f9b\u7684\u503c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u9650\u5236\uff0c\u4f7f\u7528\u66f4\u591a\u7684\u7a7a\u95f4\u3002",
  "discovererName": "Nordin",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://nextcloud.com/security/advisory/?id=nc-sa-2017-005",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-04915",
  "openTime": "2017-04-21",
  "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\u5176\u4e2d\u7684\u4e00\u4e2a\u670d\u52a1\u5668\u7248\u3002\r\n\r\nNextcloud Server 9.0.55\u4e4b\u524d\u7684\u7248\u672c\u548c10.0.2\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u8fc7\u6ee4\u0027OC-Total-Length\u0027 HTTP\u5934\u63d0\u4f9b\u7684\u503c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u9650\u5236\uff0c\u4f7f\u7528\u66f4\u591a\u7684\u7a7a\u95f4\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\u914d\u989d\u9650\u5236\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud Server \u003c9.0.55",
      "Nextcloud Nextcloud Server 10.0.2"
    ]
  },
  "referenceLink": "https://nextcloud.com/security/advisory/?id=nc-sa-2017-005\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-0887",
  "serverity": "\u4e2d",
  "submitTime": "2017-04-11",
  "title": "Nextcloud\u914d\u989d\u9650\u5236\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2017-0887 (GCVE-0-2017-0887)

Vulnerability from cvelistv5 – Published: 2017-04-05 20:00 – Updated: 2024-08-05 13:18

Summary

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a bypass in the quota limitation. Due to not properly sanitizing values provided by the `OC-Total-Length` HTTP header an authenticated adversary may be able to exceed their configured user quota. Thus using more space than allowed by the administrator.

Severity

No CVSS data available.

CWE

CWE-807 - Reliance on Untrusted Inputs in a Security Decision (CWE-807)

Assigner

hackerone mitre root Scorecard

References

2 references

URL	Tags
https://nextcloud.com/security/advisory/?id=nc-sa…	x_refsource_CONFIRM
https://hackerone.com/reports/173622	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Nextcloud	Nextcloud Server	Affected: All versions before 9.0.55 and 10.0.2

Date Public

2017-02-05 00:00

Show details on NVD website

JSON

To clipboard

{
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          "dateUpdated": "2024-08-05T13:18:06.509Z",
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            "url": "https://hackerone.com/reports/173622"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "Nextcloud Server",
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        }
      ],
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          "descriptions": [
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            }
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      ],
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        "dateUpdated": "2017-04-05T19:57:01.000Z",
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          ],
          "url": "https://hackerone.com/reports/173622"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "support@hackerone.com",
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        },
        "affects": {
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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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2017-04915

CVE-2017-0887 (GCVE-0-2017-0887)

Tags

Sightings

Nomenclature

Related by attack behaviour