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prionPRIOn knowledge basePRION:CVE-2022-29236
HistoryJun 02, 2022 - 12:15 a.m.

Code injection

2022-06-0200:15:00
PRIOn knowledge base
www.prio-n.com
4
bigbluebutton
web conferencing
access restrictions
whiteboard
permission check
server
grace period
attacker
meeting participant
vulnerability
patch

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

33.3%

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.

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

33.3%

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