Authorization

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to s...

CVE-2022-41963 BigBlueButton contains Improper Preservation of Permissions for whiteboard

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-2022-41963

BigBlueButton contains an issue in the whiteboard grace period used to handle delayed messages. Versions prior to 2.4.3 allow a meeting participant with revoked access to take actions within a few seconds after revocation due to this grace period. The vulnerability is mitigated in version 2.4.3 a...

CVE-2022-41963 BigBlueButton contains Improper Preservation of Permissions for whiteboard

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-2022-41963

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-2022-41963 BigBlueButton contains Improper Preservation of Permissions for whiteboard

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-2022-41962 BigBlueButton contains Incorrect Authorization for setting emoji status

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to s...

CVE-2022-41962 BigBlueButton contains Incorrect Authorization for setting emoji status

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to s...

CVE-2022-41962

BigBlueButton contains a vulnerability (CVE-2022-41962) described as Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users, whereas moderators should only be able to set none. Affected versions are p...

CVE-2022-41962

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to s...

CVE-2022-41962 BigBlueButton contains Incorrect Authorization for setting emoji status

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to s...

CVE-2022-41961 BigBlueButton subject to Ineffective user bans

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-2022-41961 BigBlueButton subject to Ineffective user bans

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-2022-41961 BigBlueButton subject to Ineffective user bans

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-2022-41961

CVE-2022-41961 affects BigBlueButton. Versions prior to 2.4-rc-6 are vulnerable to ineffective user bans: banning a user does not remove all accounts tied to the same extId, allowing an attacker who registers multiple users to rejoin a meeting. Root cause is insufficient permission/data purge whe...

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-2022-41960

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...

Design/Logic Flaw

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...

BigBlueButton 安全漏洞

BigBlueButton is an open source web conferencing system from the BigBlueButton community. A security vulnerability exists in BigBlueButton versions prior to 2.4.0, which stems from exposing sensitive information to unauthorized participants, and affects voting meetings where the attacker is a...

BigBlueButton 安全漏洞

BigBlueButton is an open source web conferencing system from the BigBlueButton community. A security vulnerability exists in BigBlueButton versions prior to 2.4-rc-6 and 2.5-alpha-1, which stems from an incorrect authorization containing the setting of emoji statuses, and can be exploited by an...