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      <title>CVE-2022-41960 — BigBlueButton contains DoS via failed authToken validation</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2022-41960</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; bigbluebutton&lt;/p&gt;
&lt;p&gt;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&amp;#39;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&amp;#39;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; bigbluebutton&lt;/p&gt;
&lt;p&gt;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&amp;#39;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&amp;#39;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.&lt;/p&gt;</content:encoded>
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