CVE-2022-26497

Vulnerability (CVE-2022-26497) affects BigBlueButton Greenlight 2.11.1. An attacker can embed a JavaScript payload in a username, which is executed in the victim’s browser when the attacker previously shared access to a room and the user interacts with the Share room access dialog. Root cause: cr...

BigBlueButton 跨站脚本漏洞

BigBlueButton is an open source Web conferencing system from the BigBlueButton community.BigBlueButton Greenlight has a cross-site scripting vulnerability that stems from a username containing a JavaScript payload. No detailed vulnerability details are available at this time...

BigBlueButton Denial of Service Vulnerability

BigBlueButton is an open source web conferencing system from the BigBlueButton community.BigBlueButton suffers from a denial-of-service vulnerability. An attacker could use the vulnerability to cause a denial of service to the bbb-html5 service...

PT-2022-17901 · Bigbluebutton · Bigbluebutton Greenlight

Name of the Vulnerable Software and Affected Versions: BigBlueButton Greenlight version 2.11.1 Description: The issue allows for XSS, where a threat actor could have a username containing a JavaScript payload. This payload gets executed in the browser of the victim in the "Share room access" dial...

CVE-2022-26497

BigBlueButton Greenlight 2.11.1 allows XSS. A threat actor could have a username containing a JavaScript payload. The payload gets executed in the browser of the victim in the "Share room access" dialog if the victim has shared access to the particular room with the attacker previously...

CVE-2022-29235 Limited data exposure for shared external videos in BigBlueButton

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 who is able to obtain the meeting identifier for a meeting on a server can find information related to an external video being shared, like the current timestamp...

CVE-2022-29235

CVE-2022-29235 affects BigBlueButton: an information-disclosure in which an attacker who knows a meeting ID could access data about an external video being shared (current timestamp and play/pause). Affected versions: 2.2–2.3.17 and 2.4-rc-1 through 2.4-rc-5. The issue is fixed in 2.3.18 and 2.4-...

CVE-2022-29235 Limited data exposure for shared external videos in BigBlueButton

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 who is able to obtain the meeting identifier for a meeting on a server can find information related to an external video being shared, like the current timestamp...

CVE-2022-29236 Improper access control for pencil annotations in BigBlueButton

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-2022-29236

CVE-2022-29236 affects BigBlueButton 2.2–2.3.17 and 2.4-rc-1–2.4-rc-5, where the server-side permission check for drawing on the whiteboard can be bypassed due to a previously introduced grace period. The attacker must be a meeting participant. The issue was fixed in versions 2.3.18 and 2.4-rc-6....

CVE-2022-29236 Improper access control for pencil annotations in BigBlueButton

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-2022-29234

BigBlueButton vulnerability CVE-2022-29234 allows a participant to send messages to a locked chat within a 5-second grace period after the lock settings take effect. Affected versions include 2.2 through 2.3.17 and 2.4.0. The issue is mitigated by patches in version 2.3.18 and 2.4.1, which close ...

CVE-2022-29234 Grace period for lock settings in public/private chats in BigBlueButton

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting...

CVE-2022-29234 Grace period for lock settings in public/private chats in BigBlueButton

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting...

CVE-2022-29233 Improper access control for breakout rooms in BigBlue Button

BigBlueButton is an open source web conferencing system. In BigBlueButton starting with 2.2 but before 2.3.18 and 2.4-rc-1, an attacker can circumvent access controls to gain access to all breakout rooms of the meeting they are in. The permission checks rely on knowledge of internal ids rather th...

CVE-2022-29233 Improper access control for breakout rooms in BigBlue Button

BigBlueButton is an open source web conferencing system. In BigBlueButton starting with 2.2 but before 2.3.18 and 2.4-rc-1, an attacker can circumvent access controls to gain access to all breakout rooms of the meeting they are in. The permission checks rely on knowledge of internal ids rather th...

CVE-2022-29233

Summary: CVE-2022-29233 affects BigBlueButton and allows an attacker in a meeting to bypass access controls to reach all breakout rooms. The root cause is permission checks that rely on internal IDs rather than validating the user’s role. Affected versions: 2.2 up to before 2.3.18 and 2.4-rc-1. F...

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-2022-29169

BigBlueButton is an open source web conferencing system. Versions starting with 2.2 and prior to 2.3.19, 2.4.7, and 2.5.0-beta.2 are vulnerable to regular expression denial of service ReDoS attacks. By using specific a RegularExpression, an attacker can cause denial of service for the bbb-html5...

Design/Logic Flaw

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...