Information disclosure in Bigbluebutton
CVE-2020-29043
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.015 (72.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/bigbluebutton/bigbluebutton/releases (Third Party Advisory, Release Notes)
- cxsecurity.com/issue/WLB-2020110211 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/160239/BigBlueButton-2.2.29-E-mail-Validation-Byp… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-29043?
- CVE-2020-29043 is a high-severity vulnerability in Bigbluebutton, classified under Information Disclosure. CVSS score: 7.5/10. Published 2020-11-26.
- How severe is CVE-2020-29043?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-29043 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.