CVE-2022-41963— BigBlueButton contains Improper Preservation of Permissions for whiteboard
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I. Basic Information for CVE-2022-41963
Vulnerability Information
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Vulnerability Title
BigBlueButton contains Improper Preservation of Permissions for whiteboard
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 meeting participant. This issue is patched in version 2.4.3 an version 2.5-alpha-1
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
权限预留不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
BigBlueButton 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton 2.4.3之前版本存在安全漏洞，该漏洞源于包含用于处理延迟消息的白板宽限期，攻击者利用该漏洞可以利用该宽限期在其访问权被撤销后的几秒钟内采取行动。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| bigbluebutton | bigbluebutton | < 2.4.3 | - |
II. Public POCs for CVE-2022-41963
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · bigbluebutton · 2022-12-16 · 5 CVEs total
| CVE-2022-41964 | 5.7 MEDIUM | BigBlueButton contains Response leaks in anonymous polls |
| CVE-2022-23490 | 4.3 MEDIUM | Improper access control to polling votes |
| CVE-2022-41961 | 4.3 MEDIUM | BigBlueButton subject to Ineffective user bans |
| CVE-2022-41962 | 2.7 LOW | BigBlueButton contains Incorrect Authorization for setting emoji status |
IV. Related Vulnerabilities
Same product: bigbluebutton
- CVE-2026-41127
BigBlueButton's missing authorization allows viewer to injec - CVE-2026-41126
BigBlueButton has Open Redirect through bigbluebutton/api/jo - CVE-2026-27736
BigBlueButton has Open Redirect vulnerability in ApiControll - CVE-2026-27467
BigBlueButton: Audio from participants to the server initial - CVE-2026-27466
BigBlueButton: Exposed ClamAV port enables Denial of Service
Same vendor: bigbluebutton
- CVE-2026-41127
BigBlueButton's missing authorization allows viewer to injec - CVE-2026-41126
BigBlueButton has Open Redirect through bigbluebutton/api/jo - CVE-2026-27736
BigBlueButton has Open Redirect vulnerability in ApiControll - CVE-2026-27467
BigBlueButton: Audio from participants to the server initial - CVE-2026-27466
BigBlueButton: Exposed ClamAV port enables Denial of Service
Same weakness: CWE-281
- CVE-2026-35361
uutils coreutils mknod Security Label Inconsistency and Brok - CVE-2026-35351
uutils coreutils mv Silent Ownership Loss in Cross-Device Op - CVE-2026-35350
uutils coreutils cp Unexpected Privileged Executable Creatio - CVE-2026-35385
OpenSSH 安全漏洞 - CVE-2025-9615
Networkmanager: networkmanager file access
V. Comments for CVE-2022-41963
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