8.8

CVE-2023-42803

BigBlueButton Unrestricted File Upload vulnerability

Unrestricted File Upload

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.
Mögliche Gegenmaßnahme
Server: There are no workarounds. We recommend upgrading to a patched version of BigBlueButton.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
BigBlueButton ≫ BigBlueButton Version <= 2.5.18
BigBlueButton ≫ BigBlueButton Version2.6.0 Updatealpha1
BigBlueButton ≫ BigBlueButton Version2.6.0 Updatealpha2
BigBlueButton ≫ BigBlueButton Version2.6.0 Updatealpha3
BigBlueButton ≫ BigBlueButton Version2.6.0 Updatealpha4
BigBlueButton ≫ BigBlueButton Version2.6.0 Updatebeta1
Weitere Schwachstelleninformationen
SystemBigBlueButton
≫
Produkt Server
Version < 2.6.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.54% 0.41
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 5.3 1.6 3.6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

https://github.com/bigbluebutton/bigbluebutton/pull/15990
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc
Third Party Advisory