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CVE-2023-43797

BigBlueButton Stored Cross-site Scripting vulnerability at Guest Lobby

Published: Oct 30, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-79
6.3MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 66.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-79

Affected Products

bigbluebuttonbigbluebutton
On-premWeb App
Communications / video-conferencing
bigbluebuttonoss-projectCommunicationsaka bbb

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Oct 30, 2023
Last Updated
Nov 21, 2024

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