Vulnerability CVE-2020-29043
Published: 2020-11-26   Modified: 2020-11-27

Description:
An issue was discovered in BigBlueButton through 2.2.29. When at attacker is able to view an account_activations/edit?token= URI, the attacker can create an approved user account associated with an email address that has an arbitrary domain name.

See advisories in our WLB2 database:
Topic
Author
Date
Low
BigBlueButton E-mail Validation Bypass
Seccops
25.11.2020

Type:

CWE-862

 (Missing Authorization)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Bigbluebutton -> Bigbluebutton 

 References:
http://packetstormsecurity.com/files/160239/BigBlueButton-2.2.29-E-mail-Validation-Bypass.html
https://cxsecurity.com/issue/WLB-2020110211
https://github.com/bigbluebutton/bigbluebutton/releases
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