Ethereum Name Service
CVE-2020-5232
HIGH
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
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. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity.
Technical ContextAI
This vulnerability is classified under CWE-285. 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. Affected products include: Ens.Domains Ethereum Name Service.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
More in Ethereum Name Service
View allEthereum Name Service (ENS) is a distributed, open, and extensible naming system based on the Ethereum blockchain. Rated
Improper RSA signature validation in Ethereum Name Service (ENS) versions 1.6.2 and earlier allows attackers to forge DN
Same weakness CWE-285 – Improper Authorization
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today