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CVE-2022-41961

4.3 · MEDIUM

BigBlueButton is an open source web conferencing system.

Published Dec 16, 2022CWE-345EPSS 0.30%

Overview

CVE-2022-41961 is a medium-severity vulnerability. It was published on December 16, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6GitHubgithub.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1GitHubgithub.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqgGitHubgithub.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6GitHubgithub.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1GitHubgithub.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg

How CyberStrike helps

Frequently asked questions

What is CVE-2022-41961?

CVE-2022-41961 is a medium-severity vulnerability. It was published on December 16, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2022-41961?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-41961?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-41961?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-41961 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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