What is CVE-2020-28954?

CVE-2020-28954 is a vulnerability in BigBlueButton before version 2.2.29 that allows control characters to be accepted in a user name, due to a lack of parameter sanitization in the ApiController.groovy file.

How severe is CVE-2020-28954?

CVE-2020-28954 has a severity rating of 5.3 (medium).

What software is affected by CVE-2020-28954?

BigBlueButton versions up to and excluding 2.2.29 are affected by CVE-2020-28954.

How can I fix CVE-2020-28954?

To fix CVE-2020-28954, you should update your BigBlueButton installation to version 2.2.29 or later.

What is the Common Weakness Enumeration (CWE) ID for CVE-2020-28954?

The CWE ID for CVE-2020-28954 is 116.

Vulnerability/
CVE-2020-28954

medium

5.3

CWE

116

19/11/2020

4/8/2024

CVE-2020-28954

First published: Thu Nov 19 2020(Updated: )

web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Bigbluebutton Bigbluebutton	<2.2.29

Remedy

https://github.com/bigbluebutton/bigbluebutton/commit/5c911ddeec4493f40f42e2f137800ed4692004a4

Remedy

https://github.com/bigbluebutton/bigbluebutton/commit/e59bcd0c33a6a3203c011faa8823ba2cac1e4f37

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Reference Links

Frequently Asked Questions

What is CVE-2020-28954?
CVE-2020-28954 is a vulnerability in BigBlueButton before version 2.2.29 that allows control characters to be accepted in a user name, due to a lack of parameter sanitization in the ApiController.groovy file.
How severe is CVE-2020-28954?
CVE-2020-28954 has a severity rating of 5.3 (medium).
What software is affected by CVE-2020-28954?
BigBlueButton versions up to and excluding 2.2.29 are affected by CVE-2020-28954.
How can I fix CVE-2020-28954?
To fix CVE-2020-28954, you should update your BigBlueButton installation to version 2.2.29 or later.
What is the Common Weakness Enumeration (CWE) ID for CVE-2020-28954?
The CWE ID for CVE-2020-28954 is 116.

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vendor/bigbluebutton
canonical/bigbluebutton bigbluebutton

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