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CVE-2022-41964— BigBlueButton contains Response leaks in anonymous polls

Quick assessment

Affected
bigbluebutton bigbluebutton
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton 2.4.0之前版本存在信息泄露漏洞，攻击者利用该漏洞可以在开始匿名投票之前开始订阅投票结果，并使用此订阅查看匿名投票中的个人响应。

CVSS 5.7 · Medium EPSS 0.58% · P46

Possible ATT&CK Techniques 2 AI

T1530.001 T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2022-41964

Vulnerability Information
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Vulnerability Title
BigBlueButton contains Response leaks in anonymous polls
Source: CVE Program / CVE List V5
Vulnerability Description
BigBlueButton is an open source web conferencing system. This vulnerability only affects release candidates of BigBlueButton 2.4. The attacker can start a subscription for poll results before starting an anonymous poll, and use this subscription to see individual responses in the anonymous poll. The attacker had to be a meeting presenter. This issue is patched in version 2.4.0. There are no workarounds.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
BigBlueButton 信息泄露漏洞
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 2.4.0之前版本存在信息泄露漏洞，攻击者利用该漏洞可以在开始匿名投票之前开始订阅投票结果，并使用此订阅查看匿名投票中的个人响应。
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-alpha-1, < 2.4.0 -

II. Public POCs for CVE-2022-41964

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III. Intelligence Information for CVE-2022-41964

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Vendor Advisories for CVE-2022-41964 (1)

Other References for CVE-2022-41964 (1)

Same Patch Batch · bigbluebutton · 2022-12-16 · 5 CVEs total

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
CVE-2022-41963 2.7 LOW BigBlueButton contains Improper Preservation of Permissions for whiteboard

IV. Related Vulnerabilities

Same product: bigbluebutton
Same vendor: bigbluebutton
Same weakness: CWE-200

V. Comments for CVE-2022-41964

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