BigBlueButton through 2.2.8 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."
CVE-2020-27606PUBLISHED: 2020-10-21BigBlueButton before 2.2.8 (or earlier) does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.
CVE-2020-27607PUBLISHED: 2020-10-21In BigBlueButton before 2.2.8 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data from the client. It does not directly configure the client to stop sending audio data to the server, and thus a modified server could store the audio data and/or tr...
CVE-2020-27608PUBLISHED: 2020-10-21In BigBlueButton before 2.2.8 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document.
CVE-2020-27609PUBLISHED: 2020-10-21BigBlueButton through 2.2.8 records a video meeting despite the deactivation of video recording in the user interface. This may result in data storage beyond what is authorized for a specific meeting topic or participant.
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