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
EPSS: 0.007 (47.7th percentile) — read the EPSS interpretation.
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.
Affected products
- Bigbluebutton — versions 2.4, <2.4-rc-6
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Release Notes)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, 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.