CVE-2022-29233 Improper access control for breakout rooms in BigBlue Button
Attackers can bypass access controls to view all breakout rooms in a meeting by exploiting improper permission checks based on internal IDs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-29233?
CVE-2022-29233 is a medium-severity missing authorization vulnerability in bigbluebutton, published on 1 Jun 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
BigBlueButton is an open source web conferencing system. In BigBlueButton starting with 2.2 but before 2.3.18 and 2.4-rc-1, an attacker can circumvent access controls to gain access to all breakout rooms of the meeting they are in. The permission checks rely on knowledge of internal ids rather than on verification of the role of the user. Versions 2.3.18 and 2.4-rc-1 contain a patch for this issue. There are currently no known workarounds.
Weakness: CWE-285
Which versions are affected by CVE-2022-29233?
It affects 1 product.
Products include Bigbluebutton Bigbluebutton.
How do I fix CVE-2022-29233?
No fix has been published for CVE-2022-29233 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2022-29233 being exploited?
There is no known exploitation of CVE-2022-29233 in the wild and no public exploit code.
Other vulnerabilities in bigbluebutton
Sources
Also known as GHSA-3mr9-p9gw-cf33.