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CVE-2023-43798

BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)

Published: Oct 30, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-918
NVD MITRE
5.6CVSSMEDIUM
EPSS Score
0.4%
Top 66.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-918

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

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

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-h98v-2h8w-99c4
github.com
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3q22-hph2-cff7
github.com
https://github.com/bigbluebutton/bigbluebutton/pull/18494
github.com
and 1 more references View all →

Timeline

Published
Oct 30, 2023
Last Updated
Nov 21, 2024

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