Auth bypass in Bigbluebutton Greenlight
CVE-2022-31039
Greenlight is a simple front-end interface for your BigBlueButton server. In affected versions an attacker can view any room's settings even though they are not authorized to do so. Only the room owner and administrator should be able to view a room's settings. This issue has been patched in release version 2.12.6.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Bigbluebutton Greenlight — versions < 2.12.6
Weakness classification (CWE)
References
- github.com/bigbluebutton/greenlight/security/advisories/GHSA-phh8-3v6v-7498 (Patch, Third Party Advisory)
- github.com/bigbluebutton/greenlight/pull/3508 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-31039?
- CVE-2022-31039 is a medium-severity vulnerability in Bigbluebutton Greenlight, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2022-06-27.
- How severe is CVE-2022-31039?
- Medium severity. CVSS v3 base score is 4.3 out of 10.