CVE-2022-31064

Cross site scripting in username that will trigger by sending chat

CVSS 6.5 MEDIUMEPSS 1.2%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 1.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

27 Jun 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Affected products

bigbluebutton · bigbluebutton

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References

http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.html http://seclists.org/fulldisclosure/2022/Jun/52 https://github.com/bigbluebutton/bigbluebutton/pull/15067 https://github.com/bigbluebutton/bigbluebutton/pull/15090 https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87 https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/