CVE-2020-27613

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...

CVE-2020-27608

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...

CVE-2020-27607

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...

CVE-2020-27609

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...

CVE-2020-27611

BigBlueButton through 2.2.28 uses STUN/TURN resources from a third party, which may represent an unintended endpoint...

CVE-2020-27605

BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."...

CVE-2020-27606

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...

CVE-2020-27610

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...

CVE-2020-27613

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...

CVE-2020-27608

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...

CVE-2020-27612

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...

CVE-2020-27609

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...

CVE-2020-27604

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...

CVE-2020-27603

BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files...

CVE-2020-27604

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...

CVE-2020-27603

BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files...

Design/Logic Flaw

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...

Design/Logic Flaw

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...

Design/Logic Flaw

BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."...

Session fixation

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...