CVE-2022-31065: Cross site scripting vulnerability for private chat in bigbluebutton
First published: Mon Jun 27 2022(Updated: )
BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bigbluebutton Bigbluebutton | >=2.4<2.4.8 | |
| Bigbluebutton Bigbluebutton | =2.3.0 | |
| Bigbluebutton Bigbluebutton | =2.4.9 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha1 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha2 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha3 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha4 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha5 | |
| Bigbluebutton Bigbluebutton | =2.5-alpha6 | |
| Bigbluebutton Bigbluebutton | =2.5-beta1 | |
| Bigbluebutton Bigbluebutton | =2.5-beta2 | |
| Bigbluebutton Bigbluebutton | =2.5-rc.1 | |
| Bigbluebutton Bigbluebutton | =2.5-rc.2 | |
| Bigbluebutton Bigbluebutton | =2.5-rc.3 | |
| Bigbluebutton Bigbluebutton | =2.5-rc.4 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-31065?
CVE-2022-31065 is a vulnerability in the BigBlueButton web conferencing system that allows an attacker to execute malicious JavaScript on a victim's client.
What is the severity of CVE-2022-31065?
The severity of CVE-2022-31065 is medium, with a CVSS score of 6.1.
How does CVE-2022-31065 affect BigBlueButton?
In affected versions of BigBlueButton, an attacker can embed malicious JavaScript in their username and have it executed on the victim's client when they receive a private chat.
How can I fix CVE-2022-31065?
To fix CVE-2022-31065, update your BigBlueButton installation to a version that includes the security patches. Refer to the official GitHub repository for more information on the security advisories and patches.
What is CWE-79?
CWE-79 is a common weakness enumeration category for Improper Neutralization of Input During Web Page Generation (Cross-site Scripting).
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- agent/softwarecombine
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/references
- agent/author
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/tags
- agent/title
- agent/description
- agent/event
- agent/first-publish-date
- vendor/bigbluebutton
- canonical/bigbluebutton bigbluebutton
- version/bigbluebutton bigbluebutton/2.4
- version/bigbluebutton bigbluebutton/2.3.0
- version/bigbluebutton bigbluebutton/2.4.9
- version/bigbluebutton bigbluebutton/2.5-alpha1
- version/bigbluebutton bigbluebutton/2.5-alpha2
- version/bigbluebutton bigbluebutton/2.5-alpha3
- version/bigbluebutton bigbluebutton/2.5-alpha4
- version/bigbluebutton bigbluebutton/2.5-alpha5
- version/bigbluebutton bigbluebutton/2.5-alpha6
- version/bigbluebutton bigbluebutton/2.5-beta1
- version/bigbluebutton bigbluebutton/2.5-beta2
- version/bigbluebutton bigbluebutton/2.5-rc.1
- version/bigbluebutton bigbluebutton/2.5-rc.2
- version/bigbluebutton bigbluebutton/2.5-rc.3
- version/bigbluebutton bigbluebutton/2.5-rc.4