Missing Authorization in BigBlueButton - CVE-2020-29043
Published: November 26, 2020 / Updated: November 30, 2020
Vulnerability identifier: #VU48706
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-29043
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Blindside Networks
Affected software:
BigBlueButton
BigBlueButton
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to missing authorization in the "account_activations/edit?token=" URI. A remote attacker can create an approved user account associated with an email address that has an arbitrary domain name.
How to mitigate CVE-2020-29043
Install updates from vendor's website.