Medium severity · published Jun 2, 2022
CVE-2022-29233
BigBlueButton is an open source web conferencing system
4.3
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bigbluebutton · Bigbluebutton
2.2.0 before 2.3.18; 2.4; 2.4; 2.4; 2.4; 2.4; +1 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-29233
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-29233
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/13117
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/14265
Release Notes
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
Release Notes
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-1
Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3mr9-p9gw-cf33
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