Auth bypass in Bigbluebutton
CVE-2020-27609
BigBlueButton through 2.2.28 records a video meeting despite the deactivation of video recording in the user interface. This may result in data storage beyond what is authorized for a specific meeting topic or participant.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-15161… (Exploit, Third Party Advisory)
- docs.bigbluebutton.org/admin/privacy.html (Not Applicable)
Frequently asked questions
- What is CVE-2020-27609?
- CVE-2020-27609 is a medium-severity vulnerability in Bigbluebutton, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2020-10-21.
- How severe is CVE-2020-27609?
- Medium severity. CVSS v3 base score is 5.3 out of 10.