| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| bigbluebutton | = 2.4≥ 2.2.0, < 2.3.18 | 2.3.18 |
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.
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