Vulnerability CVE-2022-29233
Published: 2022-06-02

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.

Type:

CWE-285

 (Improper Authorization)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Bigbluebutton -> Bigbluebutton 

 References:
https://github.com/bigbluebutton/bigbluebutton/pull/14265
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3mr9-p9gw-cf33
https://github.com/bigbluebutton/bigbluebutton/pull/13117
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-1
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