CVE-2022-41961
Published: 16 December 2022
Summary
CVE-2022-41961 is a medium-severity Insufficient Verification of Data Authenticity (CWE-345) vulnerability in Bigbluebutton Bigbluebutton. Its CVSS base score is 4.3 (Medium).
Operationally, ranked at the 31.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-45067
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mandates provision of authenticity and integrity artifacts that enable verification of name/address resolution data.
Requires explicit verification of data authenticity from authoritative sources, preventing acceptance of unauthenticated resolution responses.
Requires unique identification of the service before communications, addressing failures to validate the origin of the interaction.
Directly requires independent verification of matching output before adverse decisions, mitigating insufficient authenticity checks on data from external sources.
Trusted path establishment enforces validation that the communication originates from and reaches only the intended trusted system components.
Use of approved PKI certificates provides verifiable data authenticity and origin for communications and artifacts.
Mandates origin validation so that only legitimate endpoints can continue the authenticated session.
Control requires verification of data authenticity/integrity (e.g., checksums) after aggregation/packing, directly reducing exploitation of insufficient verification before transmission.