Medium severity · published Jun 27, 2022
CVE-2022-31065
BigBlueButton is an open source web conferencing system
6.1
CVSS
0.8%
EPSS
No
On KEV
Description
BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bigbluebutton · Bigbluebutton
2.4 before 2.4.8; 2.3.0; 2.4.9; 2.5; 2.5; 2.5; +9 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31065
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-31065
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/15087
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/15090
Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7
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