CVE-2022-41961 (GCVE-0-2022-41961)
Vulnerability from cvelistv5
Published
2022-12-16 12:24
Modified
2025-04-17 17:24
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-346 - Origin Validation Error
  • CWE-345 - Insufficient Verification of Data Authenticity
Summary
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds.
References
security-advisories@github.comhttps://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqgPatch, Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqgPatch, Release Notes, Third Party Advisory
Impacted products
Vendor Product Version
bigbluebutton bigbluebutton Version: < v2.4-rc-6
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:56:38.669Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6"
          },
          {
            "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-41961",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-17T17:24:38.372018Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-17T17:24:47.412Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "bigbluebutton",
          "vendor": "bigbluebutton",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c v2.4-rc-6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no 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-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-16T12:24:43.465Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6"
        },
        {
          "name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1"
        }
      ],
      "source": {
        "advisory": "GHSA-wxjp-h88g-7fqg",
        "discovery": "UNKNOWN"
      },
      "title": "BigBlueButton subject to Ineffective user bans"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-41961",
    "datePublished": "2022-12-16T12:24:43.465Z",
    "dateReserved": "2022-09-30T16:38:28.948Z",
    "dateUpdated": "2025-04-17T17:24:47.412Z",
    "requesterUserId": "c184a3d9-dc98-4c48-a45b-d2d88cf0ac74",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-41961\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2022-12-16T13:15:08.920\",\"lastModified\":\"2024-11-21T07:24:09.590\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds. \"},{\"lang\":\"es\",\"value\":\"BigBlueButton es un sistema de conferencias web de c\u00f3digo abierto. Las versiones anteriores a la 2.4-rc-6 est\u00e1n sujetas a prohibiciones de usuarios ineficaces. El atacante podr\u00eda registrar varios usuarios y unirse a la reuni\u00f3n con uno de ellos. Cuando ese usuario est\u00e1 prohibido, a\u00fan puede unirse a la reuni\u00f3n con los usuarios registrados restantes del mismo extId. Este problema se solucion\u00f3 mejorando los permisos, de modo que al prohibir a un usuario se eliminan todos los usuarios relacionados con su extId, incluidos los usuarios registrados que no se han unido a la reuni\u00f3n. Este problema est\u00e1 solucionado en las versiones 2.4-rc-6 y 2.5-alpha-1. No hay workarounds.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-345\"},{\"lang\":\"en\",\"value\":\"CWE-346\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4\",\"matchCriteriaId\":\"91AA496D-9C0A-4900-96D5-33E4180B74D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C136F53E-2EC5-433F-B354-88DA37689142\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha2:*:*:*:*:*:*\",\"matchCriteriaId\":\"626A8774-BC38-4F11-A16B-918EC8740C82\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta1:*:*:*:*:*:*\",\"matchCriteriaId\":\"33735D00-C2AC-4FDA-B47B-B15D099F26F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta2:*:*:*:*:*:*\",\"matchCriteriaId\":\"98890F0C-2E60-4696-A6E5-F44FB2A1A5BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0C916210-11BF-4F4C-AE3E-29D27135F3F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta4:*:*:*:*:*:*\",\"matchCriteriaId\":\"ABB37B70-021E-48F6-B3D2-0790A4729A3C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"407E0358-75E5-41D9-A624-3C15D2145DDE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"EC135064-4919-4759-BC25-34C7868F6431\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A0173198-BFAB-49E5-898E-173503C452C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CCB8C413-ECD9-47BF-963C-B3A0F25A1BD8\"}]}]}],\"references\":[{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Release Notes\",\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T12:56:38.669Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-41961\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-17T17:24:38.372018Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-17T17:24:42.871Z\"}}], \"cna\": {\"title\": \"BigBlueButton subject to Ineffective user bans\", \"source\": {\"advisory\": \"GHSA-wxjp-h88g-7fqg\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"bigbluebutton\", \"product\": \"bigbluebutton\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c v2.4-rc-6\"}]}], \"references\": [{\"url\": \"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\", \"name\": \"https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds. \"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-346\", \"description\": \"CWE-346: Origin Validation Error\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-345\", \"description\": \"CWE-345: Insufficient Verification of Data Authenticity\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2022-12-16T12:24:43.465Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-41961\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-17T17:24:47.412Z\", \"dateReserved\": \"2022-09-30T16:38:28.948Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2022-12-16T12:24:43.465Z\", \"requesterUserId\": \"c184a3d9-dc98-4c48-a45b-d2d88cf0ac74\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.