Vulnerability Details : CVE-2022-31065
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-31065
- cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha1:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta1:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha6:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha5:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha4:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha3:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha2:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta2:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.9:*:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.1:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.2:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.3:*:*:*:*:*:*
- cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-31065
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31065
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
2.3
|
3.7
|
GitHub, Inc. |
CWE ids for CVE-2022-31065
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-31065
-
https://github.com/bigbluebutton/bigbluebutton/pull/15090
fix: Remove use of innerHTML, dangerouslySetInnerHTML etc by Tainan404 · Pull Request #15090 · bigbluebutton/bigbluebutton · GitHubPatch;Third Party Advisory
-
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7
XSS vulnerability for private chat · Advisory · bigbluebutton/bigbluebutton · GitHubPatch;Third Party Advisory
-
https://github.com/bigbluebutton/bigbluebutton/pull/15087
fix: Ensure correct info in user left message by Tainan404 · Pull Request #15087 · bigbluebutton/bigbluebutton · GitHubPatch;Third Party Advisory
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