CVE-2022-31064
MEDIUM severity · CVSS 6.5 · Cross-site scripting (XSS)
6.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
Confidentiality impactLow
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/bigbluebutton/bigbluebutton/pull/15067 ↗
Additional information
- NVD record
- https://github.com/bigbluebutton/bigbluebutton/pull/15067Patch
- https://github.com/bigbluebutton/bigbluebutton/pull/15090Patch
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87Patch
- http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.htmlAdvisory
- http://seclists.org/fulldisclosure/2022/Jun/52Advisory
- https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/Advisory