Vulnerability-Lookup

CNVD-2021-01564

Vulnerability from cnvd - Published: 2021-01-09

Title

HedgeDoc文件上传漏洞

Description

Hedgedoc是Hedgedoc团队的一个基于Javascript的Markdown文档实时编辑分享平台。 HedgeDoc 1.7.1之前版本存在文件上传漏洞，未经认证的攻击者可利用该漏洞可以上传任意文件到上传存储后端，包括HTML、JS和PHP文件。

Severity

中

Patch Name

HedgeDoc文件上传漏洞的补丁

Patch Description

Hedgedoc是Hedgedoc团队的一个基于Javascript的Markdown文档实时编辑分享平台。 HedgeDoc 1.7.1之前版本存在文件上传漏洞，未经认证的攻击者可利用该漏洞可以上传任意文件到上传存储后端，包括HTML、JS和PHP文件。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

厂商已发布了漏洞修复程序，请及时关注更新：https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-26286

Impacted products

Name
Hedgedoc HedgeDoc <1.7.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-26286",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26286"
    }
  },
  "description": "Hedgedoc\u662fHedgedoc\u56e2\u961f\u7684\u4e00\u4e2a\u57fa\u4e8eJavascript\u7684Markdown\u6587\u6863\u5b9e\u65f6\u7f16\u8f91\u5206\u4eab\u5e73\u53f0\u3002\n\nHedgeDoc 1.7.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8ba4\u8bc1\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u4e0a\u4f20\u4efb\u610f\u6587\u4ef6\u5230\u4e0a\u4f20\u5b58\u50a8\u540e\u7aef\uff0c\u5305\u62ecHTML\u3001JS\u548cPHP\u6587\u4ef6\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-01564",
  "openTime": "2021-01-09",
  "patchDescription": "Hedgedoc\u662fHedgedoc\u56e2\u961f\u7684\u4e00\u4e2a\u57fa\u4e8eJavascript\u7684Markdown\u6587\u6863\u5b9e\u65f6\u7f16\u8f91\u5206\u4eab\u5e73\u53f0\u3002\r\n\r\nHedgeDoc 1.7.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8ba4\u8bc1\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u4e0a\u4f20\u4efb\u610f\u6587\u4ef6\u5230\u4e0a\u4f20\u5b58\u50a8\u540e\u7aef\uff0c\u5305\u62ecHTML\u3001JS\u548cPHP\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": "HedgeDoc\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Hedgedoc HedgeDoc \u003c1.7.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-26286",
  "serverity": "\u4e2d",
  "submitTime": "2020-12-29",
  "title": "HedgeDoc\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e"
}

CVE-2020-26286 (GCVE-0-2020-26286)

Vulnerability from cvelistv5 – Published: 2020-12-28 23:25 – Updated: 2024-08-04 15:56

Title

Arbitary file upload

Summary

HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an unauthenticated attacker can upload arbitrary files to the upload storage backend including HTML, JS and PHP files. The problem is patched in HedgeDoc 1.7.1. You should however verify that your uploaded file storage only contains files that are allowed, as uploaded files might still be served. As workaround it's possible to block the `/uploadimage` endpoint on your instance using your reverse proxy. And/or restrict MIME-types and file names served from your upload file storage.

Severity

7.5 (High)


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

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/hedgedoc/hedgedoc/security/adv…	x_refsource_CONFIRM
https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1	x_refsource_MISC
https://github.com/hedgedoc/hedgedoc/commit/e9306…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
hedgedoc	hedgedoc	Affected: < 1.7.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:56:04.326Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-wcr3-xhv7-8gxc"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hedgedoc",
          "vendor": "hedgedoc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an unauthenticated attacker can upload arbitrary files to the upload storage backend including HTML, JS and PHP files. The problem is patched in HedgeDoc 1.7.1. You should however verify that your uploaded file storage only contains files that are allowed, as uploaded files might still be served. As workaround it\u0027s possible to block the `/uploadimage` endpoint on your instance using your reverse proxy. And/or restrict MIME-types and file names served from your upload file storage."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-434",
              "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-12-28T23:25:13.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-wcr3-xhv7-8gxc"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8"
        }
      ],
      "source": {
        "advisory": "GHSA-wcr3-xhv7-8gxc",
        "discovery": "UNKNOWN"
      },
      "title": "Arbitary file upload",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-26286",
          "STATE": "PUBLIC",
          "TITLE": "Arbitary file upload"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "hedgedoc",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.7.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "hedgedoc"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an unauthenticated attacker can upload arbitrary files to the upload storage backend including HTML, JS and PHP files. The problem is patched in HedgeDoc 1.7.1. You should however verify that your uploaded file storage only contains files that are allowed, as uploaded files might still be served. As workaround it\u0027s possible to block the `/uploadimage` endpoint on your instance using your reverse proxy. And/or restrict MIME-types and file names served from your upload file storage."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-434 Unrestricted Upload of File with Dangerous Type"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-wcr3-xhv7-8gxc",
              "refsource": "CONFIRM",
              "url": "https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-wcr3-xhv7-8gxc"
            },
            {
              "name": "https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1",
              "refsource": "MISC",
              "url": "https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1"
            },
            {
              "name": "https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8",
              "refsource": "MISC",
              "url": "https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-wcr3-xhv7-8gxc",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-26286",
    "datePublished": "2020-12-28T23:25:13.000Z",
    "dateReserved": "2020-10-01T00:00:00.000Z",
    "dateUpdated": "2024-08-04T15:56:04.326Z",
    "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.

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CNVD-2021-01564

CVE-2020-26286 (GCVE-0-2020-26286)

Tags

Sightings

Nomenclature

Related by attack behaviour