Vulnerability-Lookup

CNVD-2018-12756

Vulnerability from cnvd - Published: 2018-07-09

Title

Nextcloud Server信息泄露漏洞（CNVD-2018-12756）

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 12.0.8之前版本和13.0.3之前版本中存在安全漏洞，该漏洞源于程序未能对图像预览执行文件访问控制规则。攻击者可利用该漏洞请求预览文件。

Severity

中

Patch Name

Nextcloud Server信息泄露漏洞（CNVD-2018-12756）的补丁

Patch Description

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-2018-002

Reference

https://hackerone.com/reports/358339 https://nextcloud.com/security/advisory/?id=nc-sa-2018-002

Impacted products

Name
['Nextcloud Nextcloud Server <12.0.8', 'Nextcloud Nextcloud Server <13.0.3']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-3762"
    }
  },
  "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 12.0.8\u4e4b\u524d\u7248\u672c\u548c13.0.3\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5bf9\u56fe\u50cf\u9884\u89c8\u6267\u884c\u6587\u4ef6\u8bbf\u95ee\u63a7\u5236\u89c4\u5219\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bf7\u6c42\u9884\u89c8\u6587\u4ef6\u3002",
  "discovererName": "unknwon",
  "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-2018-002",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-12756",
  "openTime": "2018-07-09",
  "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 12.0.8\u4e4b\u524d\u7248\u672c\u548c13.0.3\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5bf9\u56fe\u50cf\u9884\u89c8\u6267\u884c\u6587\u4ef6\u8bbf\u95ee\u63a7\u5236\u89c4\u5219\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bf7\u6c42\u9884\u89c8\u6587\u4ef6\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-2018-12756\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Nextcloud Nextcloud Server \u003c12.0.8",
      "Nextcloud Nextcloud Server \u003c13.0.3"
    ]
  },
  "referenceLink": "https://hackerone.com/reports/358339\r\nhttps://nextcloud.com/security/advisory/?id=nc-sa-2018-002",
  "serverity": "\u4e2d",
  "submitTime": "2018-07-09",
  "title": "Nextcloud Server\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2018-12756\uff09"
}

CVE-2018-3762 (GCVE-0-2018-3762)

Vulnerability from cvelistv5 – Published: 2018-07-05 16:00 – Updated: 2024-08-05 04:50

Summary

Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.

Severity

No CVSS data available.

CWE

CWE-284 - Improper Access Control - Generic (CWE-284)

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/358339	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Nextcloud	Nextcloud Server	Affected: <13.0.3, <12.0.8

Date Public

2018-06-21 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T04:50:30.641Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2018-002"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/358339"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Nextcloud Server",
          "vendor": "Nextcloud",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c13.0.3, \u003c12.0.8"
            }
          ]
        }
      ],
      "datePublic": "2018-06-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Control - Generic (CWE-284)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-07-05T15:57:01.000Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2018-002"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/358339"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "support@hackerone.com",
          "ID": "CVE-2018-3762",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Nextcloud Server",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c13.0.3, \u003c12.0.8"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Nextcloud"
              }
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          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            {
              "lang": "eng",
              "value": "Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Access Control - Generic (CWE-284)"
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://nextcloud.com/security/advisory/?id=nc-sa-2018-002",
              "refsource": "CONFIRM",
              "url": "https://nextcloud.com/security/advisory/?id=nc-sa-2018-002"
            },
            {
              "name": "https://hackerone.com/reports/358339",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/358339"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2018-3762",
    "datePublished": "2018-07-05T16:00:00.000Z",
    "dateReserved": "2017-12-28T00:00:00.000Z",
    "dateUpdated": "2024-08-05T04:50:30.641Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2018-12756

CVE-2018-3762 (GCVE-0-2018-3762)

Tags

Sightings

Nomenclature

Related by attack behaviour