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Medium severity · published Jun 2, 2022
CVE-2022-29234
BigBlueButton is an open source web conferencing system
4.3
CVSS
0.8%
EPSS
No
On KEV
Description
BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 58% 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 before 2.4.1 · source: NVD
Affected product
BI
Bigbluebutton
Bigbluebutton
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-29234
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-29234
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/13850
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/v2.4.1
Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv
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