PT-2020-18328 · Ethereum · Ethereum Name Service (Ens) Registry

Decanus · CVE-2020-5232 · Published 2020-01-30 · Updated 2022-09-20

Positive Technologies (AI Summary)

CVSS v3.1

8.7

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Ethereum Name Service (ENS) registry (affected versions not specified)

Description 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 owner's consent or awareness. A new ENS deployment is being rolled out to fix this issue.

Recommendations For the old ENS registrar, do not accept transfers of ENS domains from other users as a workaround. Update to the new ENS deployment to fix the vulnerability in the ENS registry.

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2020-5232

GHSA-8F9F-PC5V-9R5H

Affected Products

Ethereum Name Service (Ens) Registry

References · 6

• https://github.com/ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-5232 · Security Note
• https://osv.dev/vulnerability/GHSA-8f9f-pc5v-9r5h · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-5232 · Vendor Advisory
• https://github.com/ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h · Note
• https://t.me/cvenotify/693 · Telegram Post