Bigbluebutton: >> Bigbluebutton >> 0.8 Security Vulnerabilities
BigBlueButton before 2.2.28 (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.
CVSS Score
5.3
EPSS Score
0.002
Published
2020-10-21
In BigBlueButton before 2.2.28 (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 transmit it to one or more meeting participants or other third parties.
CVSS Score
6.5
EPSS Score
0.002
Published
2020-10-21
In BigBlueButton before 2.2.28 (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.
CVSS Score
6.1
EPSS Score
0.003
Published
2020-10-21
BigBlueButton through 2.2.28 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.
CVSS Score
5.3
EPSS Score
0.002
Published
2020-10-21
The installation procedure in BigBlueButton before 2.2.28 (or earlier) exposes certain network services to external interfaces, and does not automatically set up a firewall configuration to block external access.
CVSS Score
7.5
EPSS Score
0.003
Published
2020-10-21
BigBlueButton through 2.2.28 uses STUN/TURN resources from a third party, which may represent an unintended endpoint.
CVSS Score
7.3
EPSS Score
0.001
Published
2020-10-21
Greenlight in BigBlueButton through 2.2.28 places usernames in room URLs, which may represent an unintended information leak to users in a room, or an information leak to outsiders if any user publishes a screenshot of a browser window.
CVSS Score
4.3
EPSS Score
0.002
Published
2020-10-21
The installation procedure in BigBlueButton before 2.2.28 (or earlier) uses ClueCon as the FreeSWITCH password, which allows local users to achieve unintended FreeSWITCH access.
CVSS Score
8.4
EPSS Score
0.0
Published
2020-10-21
BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files.
CVSS Score
7.5
EPSS Score
0.263
Published
2020-10-21
BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an arbitrary meeting regardless of its guestPolicy setting.
CVSS Score
6.5
EPSS Score
0.002
Published
2020-10-21