6.3

CVE-2023-43797

BigBlueButton Stored Cross-site Scripting vulnerability at Guest Lobby

Stored XSS at Guest Lobby

BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. 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 < 2.6.11
BigBlueButton ≫ BigBlueButton Version2.7.0 Updatealpha1
BigBlueButton ≫ BigBlueButton Version2.7.0 Updatealpha2
BigBlueButton ≫ BigBlueButton Version2.7.0 Updatealpha3
BigBlueButton ≫ BigBlueButton Version2.7.0 Updatebeta1
BigBlueButton ≫ BigBlueButton Version2.7.0 Updatebeta2
Weitere Schwachstelleninformationen
SystemBigBlueButton
≫
Produkt Server
Version >= 0.0.0, < 2.6.11
Version >= 2.7.0, < 2.7.0-beta.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.333
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.4 2.3 2.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
security-advisories@github.com 6.3 2.8 3.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://github.com/bigbluebutton/bigbluebutton/commit/304bc851a00558f99a908880f4ac44234a074c9d
Patch
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/18392
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-v6wg-q866-h73x
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-v6wg-q866-h73x
Third Party Advisory