Vulnerability-Lookup

CNVD-2022-82636

Vulnerability from cnvd - Published: 2022-11-29

Title

BigBlueButton授权问题漏洞（CNVD-2022-82636）

Description

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton存在授权问题漏洞，攻击者可利用该漏洞在锁定设置生效后的5s宽限期内向锁定的聊天发送消息。

Severity

中

Patch Name

BigBlueButton授权问题漏洞（CNVD-2022-82636）的补丁

Patch Description

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton存在授权问题漏洞，攻击者可利用该漏洞在锁定设置生效后的5s宽限期内向锁定的聊天发送消息。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/bigbluebutton/bigbluebutton/releases/tag/v2.4.1

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-29234

Impacted products

Name
['BigBlueButton BigBlueButton >=2.2，<=2.3.18', 'BigBlueButton BigBlueButton 2.4.1']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-29234"
    }
  },
  "description": "BigBlueButton\u662fBigBlueButton\u793e\u533a\u7684\u4e00\u5957\u5f00\u6e90\u7684Web\u4f1a\u8bae\u7cfb\u7edf\u3002\n\nBigBlueButton\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u9501\u5b9a\u8bbe\u7f6e\u751f\u6548\u540e\u76845s\u5bbd\u9650\u671f\u5185\u5411\u9501\u5b9a\u7684\u804a\u5929\u53d1\u9001\u6d88\u606f\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-82636",
  "openTime": "2022-11-29",
  "patchDescription": "BigBlueButton\u662fBigBlueButton\u793e\u533a\u7684\u4e00\u5957\u5f00\u6e90\u7684Web\u4f1a\u8bae\u7cfb\u7edf\u3002\r\n\r\nBigBlueButton\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u9501\u5b9a\u8bbe\u7f6e\u751f\u6548\u540e\u76845s\u5bbd\u9650\u671f\u5185\u5411\u9501\u5b9a\u7684\u804a\u5929\u53d1\u9001\u6d88\u606f\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\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2022-82636\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "BigBlueButton BigBlueButton \u003e=2.2\uff0c\u003c=2.3.18",
      "BigBlueButton BigBlueButton 2.4.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2022-29234",
  "serverity": "\u4e2d",
  "submitTime": "2022-06-07",
  "title": "BigBlueButton\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2022-82636\uff09"
}

CVE-2022-29234 (GCVE-0-2022-29234)

Vulnerability from cvelistv5 – Published: 2022-06-01 23:20 – Updated: 2025-04-23 18:20

Title

Grace period for lock settings in public/private chats in BigBlueButton

Summary

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 14:06 UTC

CWE

CWE-285 - Improper Authorization

Assigner

GitHub_M mitre root Scorecard

References

5 references

URL	Tags
https://github.com/bigbluebutton/bigbluebutton/se…	x_refsource_CONFIRM
https://github.com/bigbluebutton/bigbluebutton/pu…	x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/pu…	x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/re…	x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/re…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
bigbluebutton	bigbluebutton	Affected: >= 2.2, < 2.3.18 Affected: >= 2.4, < 2.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T06:17:54.164Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/pull/13850",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/pull/13850"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/pull/14265",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/pull/14265"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-29234",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T14:06:17.770450Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:20:10.802Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "bigbluebutton",
          "vendor": "bigbluebutton",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.2, \u003c 2.3.18"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.4, \u003c 2.4.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-08T18:46:00.400Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/pull/13850",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/pull/13850"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/pull/14265",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/pull/14265"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1"
        }
      ],
      "source": {
        "advisory": "GHSA-36vc-c338-6xjv",
        "discovery": "UNKNOWN"
      },
      "title": "Grace period for lock settings in public/private chats in BigBlueButton"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-29234",
    "datePublished": "2022-06-01T23:20:14.000Z",
    "dateReserved": "2022-04-13T00:00:00.000Z",
    "dateUpdated": "2025-04-23T18:20:10.802Z",
    "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.
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CNVD-2022-82636

CVE-2022-29234 (GCVE-0-2022-29234)

Tags

Sightings

Nomenclature

Related by attack behaviour