714 matches found
CVE-2022-41961
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered...
CVE-2022-41963
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3 contain a whiteboard grace period that exists to handle delayed messages, but this grace period could be used by attackers to take actions in the few seconds after their access is revoked. The attacker must be a...
CVE-2022-41960
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service. An attacker can make a Meteor call to validateAuthToken using a victim's userId, meetingId, and an invalid authToken. Th...
CVE-2022-29232
BigBlueButton is an open source web conferencing system. Starting with version 2.2 and prior to versions 2.3.9 and 2.4-beta-1, an attacker can circumvent access controls to obtain the content of public chat messages from different meetings on the server. The attacker must be a participant in a...
CVE-2022-29236
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 gra...
CVE-2020-25820
BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field...
CVE-2020-29043
An issue was discovered in BigBlueButton through 2.2.29. When at attacker is able to view an accountactivations/edit?token= URI, the attacker can create an approved user account associated with an email address that has an arbitrary domain name...
CVE-2020-28954
web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name...
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-2020-27608
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-2020-29042
An issue was discovered in BigBlueButton through 2.2.29. A brute-force attack may occur because an unlimited number of codes can be entered for a meeting that is protected by an access code...
CVE-2020-27642
A cross-site scripting XSS vulnerability exists in the 'merge account' functionality in admins.js in BigBlueButton Greenlight 2.7.6...
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-2020-28953
In BigBlueButton before 2.2.29, a user can vote more than once in a single poll...
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-2020-27612
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-2020-27601
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-2020-27609
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-2020-27606
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...