CVE-2022-41960
Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service.
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-345
- Affected
- bigbluebutton/bigbluebutton
- Source
- security-advisories@github.com
References
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rgjp-3r74-g4cmRelease Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rgjp-3r74-g4cmRelease Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.