CVE-2023-43798 — BigBlueButton is an open-source virtual classroom
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 `httpclien
Published
2023-10-30T22:24:59.109Z
Last modified
2024-09-05T20:19:17.331Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
01What is this vulnerability?
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…
02Affected products
| Vendor | Product | Versions |
|---|
| bigbluebutton | bigbluebutton | < 2.6.12, >= 2.7.0-alpha.1, < 2.7.0-rc.1 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
Open in Sigma generator →
07Related CVEs
08Timeline
- Published: 2023-10-30T22:24:59.109Z
- Last modified: 2024-09-05T20:19:17.331Z
09References
- github.com — https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-h98v-2h8…
- github.com — https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3q22-hph…
- github.com — https://github.com/bigbluebutton/bigbluebutton/pull/18494
- github.com — https://github.com/bigbluebutton/bigbluebutton/pull/18580
Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.
Read the API reference →