CVE-2024-38518: medium-severity vulnerability in bigbluebutton
bbb-web API additional parameters considered
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.6epss 0.3%
BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be "role=moderator", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Affected products
bigbluebutton · bigbluebuttonRelated CVEs — bigbluebutton
In the same product, most dangerous first.
CVE-2022-29169HIGHReDoS on endpoint html5client/useragent in BigBlueButtonEPSS 1.6%CVE-2022-31064MEDIUMCross site scripting in username that will trigger by sending chatEPSS 1.3%CVE-2022-29232MEDIUMExposure of messages in BigBlueButton public chatsEPSS 1.1%CVE-2022-29235MEDIUMLimited data exposure for shared external videos in BigBlueButtonEPSS 1.1%CVE-2022-29233MEDIUMImproper access control for breakout rooms in BigBlue ButtonEPSS 1.1%CVE-2022-29236MEDIUMImproper access control for pencil annotations in BigBlueButtonEPSS 0.9%
References
https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72https://github.com/bigbluebutton/bigbluebutton/pull/20279https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4