Vulnerability Description
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service. An attacker can make a Meteor call to `validateAuthToken` using a victim's userId, meetingId, and an invalid authToken. This forces the victim to leave the conference, because the resulting verification failure is also observed and handled by the victim's client. The attacker must be a participant in any meeting on the server. This issue is patched in version 2.4.3. There are no workarounds.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | < 2.4.3 |
Related Weaknesses (CWE)
References
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3Release NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rgjp-3r7Release NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3Release NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rgjp-3r7Release NotesThird Party Advisory
FAQ
What is CVE-2022-41960?
CVE-2022-41960 is a vulnerability with a CVSS score of 4.3 (MEDIUM). BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service. An attacker can make a ...
How severe is CVE-2022-41960?
CVE-2022-41960 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-41960?
Check the references section above for vendor advisories and patch information. Affected products include: Bigbluebutton Bigbluebutton.