CVE-2022-41961 (GCVE-0-2022-41961)

Vulnerability from cvelistv5 – Published: 2022-12-16 12:24 – Updated: 2025-04-17 17:24
VLAI?
Title
BigBlueButton subject to Ineffective user bans
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.
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
Assigner
References
Impacted products
Vendor Product Version
bigbluebutton bigbluebutton Affected: < v2.4-rc-6
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    "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"
    }
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.