CVE-2022-41961

BigBlueButton subject to Ineffective user bans

Description

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: bigbluebutton bigbluebutton
Published at:
Updated at:

References

Link Tags
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg release notes third party advisory patch
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6 third party advisory release notes
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2022-41961?
CVE-2022-41961 has been scored as a medium severity vulnerability.
How to fix CVE-2022-41961?
To fix CVE-2022-41961, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-41961 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-41961 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-41961?
CVE-2022-41961 affects bigbluebutton bigbluebutton.
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