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CVE-2022-23490— Improper access control to polling votes

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之前版本存在安全漏洞，该漏洞源于将敏感信息暴露给未经授权的参与者，此问题会影响投票会议，其中攻击者是会议参与者。

CVSS 4.3 · Medium EPSS 0.46% · P37

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2022-23490

Vulnerability Information
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Vulnerability Title
Improper access control to polling votes
Source: CVE Program / CVE List V5
Vulnerability Description
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.0 expose sensitive information to Unauthorized Actors. This issue affects meetings with polls, where the attacker is a meeting participant. Subscribing to the current-poll collection does not update the client UI, but does give the attacker access to the contents of the collection, which include the individual poll responses. 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:N/S:U/C:L/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 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 2.4.0之前版本存在安全漏洞，该漏洞源于将敏感信息暴露给未经授权的参与者，此问题会影响投票会议，其中攻击者是会议参与者。
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 < 2.4.0 -

II. Public POCs for CVE-2022-23490

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III. Intelligence Information for CVE-2022-23490

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Vendor Advisories for CVE-2022-23490 (1)

Other References for CVE-2022-23490 (1)

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

CVE-2022-41964 5.7 MEDIUM BigBlueButton contains Response leaks in anonymous polls
CVE-2022-41961 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-2022-23490

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