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-2020-27613

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-2020-27604

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 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...

Design/Logic Flaw

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...

Improper access control

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

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."...

Code injection

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

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...

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...

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...

Default credentials

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...

Code injection

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-2020-27601

BigBlueButton before 2.2.7: the setting lockSettingsProps.disablePrivateChat is not applied to chats that are already open. Root cause is in bigbluebutton-html5/imports/ui/components/chat/service.js. Impact is that private-chat restrictions may not be enforced for existing chats (low severity per...

CVE-2020-27601

In BigBlueButton before 2.2.7, lockSettingsProps.disablePrivateChat does not apply to already opened chats. This occurs in bigbluebutton-html5/imports/ui/components/chat/service.js...

CVE-2020-27603

BigBlueButton prior to 2.2.27 is affected by an unsafe JODConverter setting that allows LibreOffice document conversions to access external files. The root cause is the JODConverter configuration used during server-side rendering, enabling potential data exfiltration via LibreOffice processing. T...

CVE-2020-27603

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