Vulnerability-Lookup

CNVD-2021-03031

Vulnerability from cnvd - Published: 2021-01-14

Title

Nextcloud Contacts跨站脚本漏洞（CNVD-2021-03031）

Description

Nextcloud Contacts是Nextcloud的CardDAV服务器的用户界面。 Nextcloud Contacts 3.4.0存在跨站脚本漏洞。该漏洞源于缺少文件类型检查。攻击者可通过将SVG文件作为PNG文件上传利用该漏洞进行跨站脚本攻击。

Severity

低

Patch Name

Nextcloud Contacts跨站脚本漏洞（CNVD-2021-03031）的补丁

Patch Description

Nextcloud Contacts是Nextcloud的CardDAV服务器的用户界面。 Nextcloud Contacts 3.4.0存在跨站脚本漏洞。该漏洞源于缺少文件类型检查。攻击者可通过将SVG文件作为PNG文件上传利用该漏洞进行跨站脚本攻击。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://nextcloud.com/security/advisory/?id=NC-SA-2020-044

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8280

Impacted products

Name
Nextcloud Contacts 3.4.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8280",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8280"
    }
  },
  "description": "Nextcloud Contacts\u662fNextcloud\u7684CardDAV\u670d\u52a1\u5668\u7684\u7528\u6237\u754c\u9762\u3002\n\nNextcloud Contacts 3.4.0\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f3a\u5c11\u6587\u4ef6\u7c7b\u578b\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06SVG\u6587\u4ef6\u4f5c\u4e3aPNG\u6587\u4ef6\u4e0a\u4f20\u5229\u7528\u8be5\u6f0f\u6d1e\u8fdb\u884c\u8de8\u7ad9\u811a\u672c\u653b\u51fb\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://nextcloud.com/security/advisory/?id=NC-SA-2020-044",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-03031",
  "openTime": "2021-01-14",
  "patchDescription": "Nextcloud Contacts\u662fNextcloud\u7684CardDAV\u670d\u52a1\u5668\u7684\u7528\u6237\u754c\u9762\u3002\r\n\r\nNextcloud Contacts 3.4.0\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f3a\u5c11\u6587\u4ef6\u7c7b\u578b\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06SVG\u6587\u4ef6\u4f5c\u4e3aPNG\u6587\u4ef6\u4e0a\u4f20\u5229\u7528\u8be5\u6f0f\u6d1e\u8fdb\u884c\u8de8\u7ad9\u811a\u672c\u653b\u51fb\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 Contacts\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2021-03031\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Nextcloud Contacts 3.4.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-8280",
  "serverity": "\u4f4e",
  "submitTime": "2021-01-07",
  "title": "Nextcloud Contacts\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff08CNVD-2021-03031\uff09"
}

CVE-2020-8280 (GCVE-0-2020-8280)

Vulnerability from cvelistv5 – Published: 2021-01-06 20:59 – Updated: 2024-08-04 09:56

Summary

A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.

Severity

No CVSS data available.

CWE

CWE-79 - Cross-site Scripting (XSS) - Stored (CWE-79)

Assigner

hackerone mitre root Scorecard

References

2 references

URL	Tags
https://hackerone.com/reports/998422	x_refsource_MISC
https://nextcloud.com/security/advisory/?id=NC-SA…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Nextcloud Contacts	Affected: Fixed in 3.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:56:28.301Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/998422"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-044"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Nextcloud Contacts",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in 3.4.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "Cross-site Scripting (XSS) - Stored (CWE-79)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-06T20:59:57.000Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/998422"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-044"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "support@hackerone.com",
          "ID": "CVE-2020-8280",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Nextcloud Contacts",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Fixed in 3.4.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Cross-site Scripting (XSS) - Stored (CWE-79)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://hackerone.com/reports/998422",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/998422"
            },
            {
              "name": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-044",
              "refsource": "MISC",
              "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-044"
            }
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  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2020-8280",
    "datePublished": "2021-01-06T20:59:57.000Z",
    "dateReserved": "2020-01-28T00:00:00.000Z",
    "dateUpdated": "2024-08-04T09:56:28.301Z",
    "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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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-2021-03031

CVE-2020-8280 (GCVE-0-2020-8280)

Tags

Sightings

Nomenclature

Related by attack behaviour