CVE-2023-43798

MEDIUM EPSS 33.4%
Published Oct 30, 20232y ago · Modified Jun 17, 20262w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Oct 30, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.4
Exploitability
2.8
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
33.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-918 Server-Side Request Forgery (SSRF) Validation

Affected Products 7

VendorProductVersionRange
bigbluebuttonbigbluebutton* <2.6.12
bigbluebuttonbigbluebutton2.7.0any
bigbluebuttonbigbluebutton2.7.0any
bigbluebuttonbigbluebutton2.7.0any
bigbluebuttonbigbluebutton2.7.0any
bigbluebuttonbigbluebutton2.7.0any
bigbluebuttonbigbluebutton2.7.0any

References 4

  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/18494
    Third Party Advisory
  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/18580
    Third Party Advisory
  • github.com https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3q22-hph2-cff7
    Third Party Advisory
  • github.com https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-h98v-2h8w-99c4
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.