Information disclosure in Bigbluebutton
CVE-2022-29235
BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4-rc-6, an attacker who is able to obtain the meeting identifier for a meeting on a server can find information related to an external video being shared, like the current timestamp and play/pause. The problem has been patched in versions 2.3.18 and 2.4-rc-6 by modifying the stream to send the data only for users in the meeting. There are currently no known workarounds.
Vulnerability class: Information Disclosure
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:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Bigbluebutton — versions >= 2.4-alpha-1, < 2.4-rc-6, >= 2.2, < 2.3.18, 2.4
Weakness classification (CWE)
References
- github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-x82p-j22f-v4q6 (Patch, Third Party Advisory)
- github.com/bigbluebutton/bigbluebutton/pull/13788 (Patch, Third Party Advisory)
- github.com/bigbluebutton/bigbluebutton/pull/14265 (Patch, Third Party Advisory)
- github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18 (Third Party Advisory, Release Notes)
- github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-29235?
- CVE-2022-29235 is a medium-severity vulnerability in Bigbluebutton, classified under Information Disclosure. CVSS score: 5.3/10. Published 2022-06-02.
- How severe is CVE-2022-29235?
- Medium severity. CVSS v3 base score is 5.3 out of 10.