CVE-2022-29236: fallo de gravedad media en bigbluebutton
Improper access control for pencil annotations in BigBlueButton
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 4.3epss 0.9%
BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4-rc-6, an attacker can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant. The problem has been patched in versions 2.3.18 and 2.4-rc-6. There are currently no known workarounds.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Productos afectados
bigbluebutton · bigbluebuttonCVEs relacionadas — bigbluebutton
En el mismo producto, de las más peligrosas a las menos.
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-2022-29234MEDIUMGrace period for lock settings in public/private chats in BigBlueButtonEPSS 0.9%
Referencias
https://github.com/bigbluebutton/bigbluebutton/pull/13803https://github.com/bigbluebutton/bigbluebutton/pull/14265https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r