Vulnerability-Lookup

CNVD-2020-60466

Vulnerability from cnvd - Published: 2020-11-04

Title

BigBlueButton服务器端请求伪造漏洞

Description

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton 2.2.7之前版本存在服务器端请求伪造漏洞，该漏洞允许攻击者读取本地文件，并通过上传的Office文档进行SSRF攻击，该文档在ODF xlink字段中有一个精心设计的URL。

Severity

中

Patch Name

BigBlueButton服务器端请求伪造漏洞的补丁

Patch Description

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton 2.2.7之前版本存在服务器端请求伪造漏洞，该漏洞允许攻击者读取本地文件，并通过上传的Office文档进行SSRF攻击，该文档在ODF xlink字段中有一个精心设计的URL。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，详情请关注厂商主页： https://bigbluebutton.org/

Reference

https://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html

Impacted products

Name
BigBlueButton BigBlueButton <2.2.7

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25820",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25820"
    }
  },
  "description": "BigBlueButton\u662fBigBlueButton\u793e\u533a\u7684\u4e00\u5957\u5f00\u6e90\u7684Web\u4f1a\u8bae\u7cfb\u7edf\u3002\n\nBigBlueButton 2.2.7\u4e4b\u524d\u7248\u672c\u5b58\u5728\u670d\u52a1\u5668\u7aef\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u653b\u51fb\u8005\u8bfb\u53d6\u672c\u5730\u6587\u4ef6\uff0c\u5e76\u901a\u8fc7\u4e0a\u4f20\u7684Office\u6587\u6863\u8fdb\u884cSSRF\u653b\u51fb\uff0c\u8be5\u6587\u6863\u5728ODF xlink\u5b57\u6bb5\u4e2d\u6709\u4e00\u4e2a\u7cbe\u5fc3\u8bbe\u8ba1\u7684URL\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://bigbluebutton.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-60466",
  "openTime": "2020-11-04",
  "patchDescription": "BigBlueButton\u662fBigBlueButton\u793e\u533a\u7684\u4e00\u5957\u5f00\u6e90\u7684Web\u4f1a\u8bae\u7cfb\u7edf\u3002\r\n\r\nBigBlueButton 2.2.7\u4e4b\u524d\u7248\u672c\u5b58\u5728\u670d\u52a1\u5668\u7aef\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u653b\u51fb\u8005\u8bfb\u53d6\u672c\u5730\u6587\u4ef6\uff0c\u5e76\u901a\u8fc7\u4e0a\u4f20\u7684Office\u6587\u6863\u8fdb\u884cSSRF\u653b\u51fb\uff0c\u8be5\u6587\u6863\u5728ODF xlink\u5b57\u6bb5\u4e2d\u6709\u4e00\u4e2a\u7cbe\u5fc3\u8bbe\u8ba1\u7684URL\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": "BigBlueButton\u670d\u52a1\u5668\u7aef\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "BigBlueButton BigBlueButton \u003c2.2.7"
  },
  "referenceLink": "https://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html",
  "serverity": "\u4e2d",
  "submitTime": "2020-10-23",
  "title": "BigBlueButton\u670d\u52a1\u5668\u7aef\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e"
}

CVE-2020-25820 (GCVE-0-2020-25820)

Vulnerability from cvelistv5 – Published: 2020-10-21 13:01 – Updated: 2024-08-04 15:40

Summary

BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field.

Severity

No CVSS data available.

CWE

Assigner

mitre

References

5 references

URL	Tags
https://www.redteam-pentesting.de/advisories/rt-s…	x_refsource_MISC
https://www.golem.de/news/big-blue-button-das-gro…	x_refsource_MISC
http://packetstormsecurity.com/files/159667/BigBl…	x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/co…	x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/co…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:40:36.978Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2020-005"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field."
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-21T18:36:45.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2020-005"
        },
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          "tags": [
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        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "cve@mitre.org",
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          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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                      "product_name": "n/a",
                      "version": {
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                      }
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                "vendor_name": "n/a"
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        "problemtype": {
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                  "value": "n/a"
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        },
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            },
            {
              "name": "https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html",
              "refsource": "MISC",
              "url": "https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html"
            },
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            },
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              "name": "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27",
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  },
  "cveMetadata": {
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    "assignerShortName": "mitre",
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    "datePublished": "2020-10-21T13:01:48.000Z",
    "dateReserved": "2020-09-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T15:40:36.978Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2020-60466

CVE-2020-25820 (GCVE-0-2020-25820)

Tags

Sightings

Nomenclature