Medium severity · published Jun 27, 2022
CVE-2022-31064
BigBlueButton is an open source web conferencing system
5.4
CVSS
1.3%
EPSS
No
On KEV
Description
BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. The attack occurs when the attacker (with xss in the name) starts a chat. in the victim's client the JavaScript will be executed. This issue has been addressed 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:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% 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-2022-31064
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-31064
Exploit
http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.html
Exploit
http://seclists.org/fulldisclosure/2022/Jun/52
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/15067
Patch
https://github.com/bigbluebutton/bigbluebutton/pull/15090
Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87
Exploit
https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/
More from Bigbluebutton
9.8
CVE-2020-27605
BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."
9.8
CVE-2020-27602
BigBlueButton before 2.2.7 does not have a protection mechanism for separator injection in meetingId, userId, and authToken
9.8
CVE-2020-12443
BigBlueButton before 2.2.6 allows remote attackers to read arbitrary files because the presfilename (lowercase) value can be a .pdf filename while the presFilename (mixed case)…
8.8
CVE-2023-42803
BigBlueButton Unrestricted File Upload vulnerability
8.5
CVE-2026-46682
BigBlueButton: Blind SQL Injection AUTH (Moderator)