CVE-2020-29043 : Security Advisory and Response

BigBlueButton through 2.2.29 allows attackers to create approved user accounts with arbitrary domain names via a specific URI.

Understanding CVE-2020-29043

This CVE identifies a vulnerability in BigBlueButton that enables unauthorized users to manipulate account creation.

What is CVE-2020-29043?

The issue in BigBlueButton through version 2.2.29 allows attackers to exploit a URI to create user accounts with unauthorized email domains.

The Impact of CVE-2020-29043

This vulnerability can lead to unauthorized account creation, potentially compromising the system's integrity and security.

Technical Details of CVE-2020-29043

BigBlueButton's vulnerability allows attackers to bypass email domain validation, leading to unauthorized account creation.

Vulnerability Description

The flaw in BigBlueButton through 2.2.29 permits attackers to create approved user accounts with email addresses containing arbitrary domain names.

Affected Systems and Versions

Product: BigBlueButton
Vendor: N/A
Versions affected: All versions up to 2.2.29

Exploitation Mechanism

Attackers exploit the 'account_activations/edit?token=' URI to create user accounts with unauthorized email domains.

Mitigation and Prevention

Taking immediate action and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2020-29043.

Immediate Steps to Take

Update BigBlueButton to the latest version to patch the vulnerability.
Monitor user account creation for any suspicious activity.

Long-Term Security Practices

Regularly review and update security configurations.
Conduct security training for users to prevent social engineering attacks.
Implement multi-factor authentication to enhance account security.
Regularly audit user accounts and permissions.

Patching and Updates

Ensure timely installation of security patches and updates for BigBlueButton to address the vulnerability effectively.