CVE-2022-41960
Assigner: GitHub_M
Published: 2022-12-15T23:56:26.500Z
State: PUBLISHED
title: BigBlueButton contains DoS via failed authToken validation
problemTypes: descriptions: cweId: CWE-345
description: CWE-345: Insufficient Verification of Data Authenticity
type: CWE
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
version: 3.1
affected: vendor: bigbluebutton
product: bigbluebutton
versions: version: < 2.4.3
status: affected
descriptions: value: 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.
source: advisory: GHSA-rgjp-3r74-g4cm
discovery: UNKNOWN