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.
EPSS: 0.012 (64.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Ens.domains Ethereum_name_service
- Ensdomains @Ensdomains/ens — versions < 0.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
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.