Auth bypass in Bigbluebutton
CVE-2022-41962
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to set none as the status of other users. This issue is patched in 2.4-rc-6 and 2.5-alpha-1There are no workarounds.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.8% 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 — versions 2.4, <2.4-rc-6
Weakness classification (CWE)
References
- github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-88qf-33qm-9mm7 (Patch, Third Party Advisory, Release Notes)
- github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6 (Third Party Advisory, Release Notes)
- github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-41962?
- CVE-2022-41962 is a low-severity vulnerability in Bigbluebutton, classified under Incorrect Authorization. CVSS score: 2.7/10. Published 2022-12-16.
- How severe is CVE-2022-41962?
- Low severity. CVSS v3 base score is 2.7 out of 10.