Auth bypass in Elabftw
CVE-2021-43833
eLabFTW is an electronic lab notebook manager for research teams. In versions prior to 4.2.0 there is a vulnerability which allows any authenticated user to gain access to arbitrary accounts by setting a specially crafted email address. This vulnerability impacts all instances that have not set an explicit email domain name allowlist. Note that whereas neither administrators nor targeted users are notified of a change, an attacker will need to control an account. The default settings require administrators to validate newly created accounts. The problem has been patched. Users should upgrade to at least version 4.2.0. For users unable to upgrade enabling an email domain allow list (from Sysconfig panel, Security tab) will completely resolve the issue.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Elabftw — versions < 4.2.0
Weakness classification (CWE)
References
- github.com/elabftw/elabftw/security/advisories/GHSA-v659-q2fh-v99w (Third Party Advisory)
- github.com/elabftw/elabftw/releases/tag/4.2.0 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-43833?
- CVE-2021-43833 is a high-severity vulnerability in Elabftw, classified under Improper Authentication. CVSS score: 8.1/10. Published 2021-12-16.
- How severe is CVE-2021-43833?
- High severity. CVSS v3 base score is 8.1 out of 10.