CVE-2022-29235: Limited data exposure for shared external videos in BigBlueButton
First published: Wed Jun 01 2022(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bigbluebutton Bigbluebutton | >=2.2.0<2.3.18 | |
| Bigbluebutton Bigbluebutton | =2.4-alpha1 | |
| Bigbluebutton Bigbluebutton | =2.4-alpha2 | |
| Bigbluebutton Bigbluebutton | =2.4-beta1 | |
| Bigbluebutton Bigbluebutton | =2.4-beta2 | |
| Bigbluebutton Bigbluebutton | =2.4-beta3 | |
| Bigbluebutton Bigbluebutton | =2.4-beta4 | |
| Bigbluebutton Bigbluebutton | =2.4-rc1 | |
| Bigbluebutton Bigbluebutton | =2.4-rc3 | |
| Bigbluebutton Bigbluebutton | =2.4-rc4 | |
| Bigbluebutton Bigbluebutton | =2.4-rc5 |
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Reference Links
- https://github.com/bigbluebutton/bigbluebutton/pull/13788
- https://github.com/bigbluebutton/bigbluebutton/pull/14265
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-x82p-j22f-v4q6
Frequently Asked Questions
What is CVE-2022-29235?
CVE-2022-29235 is a vulnerability in the BigBlueButton web conferencing system that allows an attacker with the meeting identifier to obtain information about an external video being shared.
What is the severity of CVE-2022-29235?
The severity of CVE-2022-29235 is medium with a score of 5.3.
Which versions of BigBlueButton are affected by CVE-2022-29235?
BigBlueButton versions 2.2 up to versions 2.3.18 and 2.4-rc-6 are affected by CVE-2022-29235.
How can an attacker exploit CVE-2022-29235?
An attacker can exploit CVE-2022-29235 by obtaining the meeting identifier for a meeting on a server and using it to find information about an external video being shared.
Is there a fix for CVE-2022-29235?
Yes, a fix for CVE-2022-29235 is available in BigBlueButton version 2.3.18 and can be downloaded from the official BigBlueButton website.
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/remedy
- agent/references
- agent/last-modified-date
- agent/weakness
- agent/description
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- agent/first-publish-date
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/bigbluebutton
- canonical/bigbluebutton bigbluebutton
- version/bigbluebutton bigbluebutton/2.2.0
- version/bigbluebutton bigbluebutton/2.4-alpha1
- version/bigbluebutton bigbluebutton/2.4-alpha2
- version/bigbluebutton bigbluebutton/2.4-beta1
- version/bigbluebutton bigbluebutton/2.4-beta2
- version/bigbluebutton bigbluebutton/2.4-beta3
- version/bigbluebutton bigbluebutton/2.4-beta4
- version/bigbluebutton bigbluebutton/2.4-rc1
- version/bigbluebutton bigbluebutton/2.4-rc3
- version/bigbluebutton bigbluebutton/2.4-rc4
- version/bigbluebutton bigbluebutton/2.4-rc5