漏洞信息
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Vulnerability Title
BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation
Vulnerability Description
BigBlueButton is an open-source virtual classroom. A Denial of Service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
对异常条件检查或处理不恰当
Vulnerability Title
BigBlueButton 安全漏洞
Vulnerability Description
BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton 3.0.13之前版本存在安全漏洞,该漏洞源于对polling功能的Choices响应类型处理不当,可能导致拒绝服务攻击。
CVSS Information
N/A
Vulnerability Type
N/A