Vulnerability CVE-2022-29234
Published: 2022-06-02

Description:
BigBlueButton is an open source web conferencing system. Starting in version 2.2 and up to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s after the lock setting was enacted. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds.

Type:

CWE-285

 (Improper Authorization)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Bigbluebutton -> Bigbluebutton 

 References:
https://github.com/bigbluebutton/bigbluebutton/pull/13850
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1
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-36vc-c338-6xjv
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