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. This forces the victim to leave the conference, because the resulting verification failure is also observed and handled by the victim's client. The attacker must be a participant in any meeting on the server. This issue is patched in version 2.4.3. There are no workarounds.

CVSS v3.0 4.3 MEDIUM

4.3^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1	Release Notes Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.3	Release Notes Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rgjp-3r74-g4cm	Release Notes Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

Information

Published : 2022-12-15 16:15

Updated : 2022-12-20 11:07

NVD link : CVE-2022-41960

Mitre link : CVE-2022-41960

JSON object : View

CWE

CWE-345

Insufficient Verification of Data Authenticity

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Products Affected

bigbluebutton

bigbluebutton

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