Auth bypass in Ens.domains Ethereum Name Service
CVE-2020-5232
A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Ens.domains Ethereum Name Service
- Ensdomains @Ensdomains/ens — versions < 0.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h (Third Party Advisory)
- github.com/ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-5232?
- CVE-2020-5232 is a high-severity vulnerability in Ens.domains Ethereum Name Service, classified under Improper Authorization. CVSS score: 8.7/10. Published 2020-01-31.
- How severe is CVE-2020-5232?
- High severity. CVSS v3 base score is 8.7 out of 10.
- Is CVE-2020-5232 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.