CVE-2021-43570

The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Score

CVSS 3.1 9.8 Critical

Status

Modified - cve@mitre.org

Published

2021-11-09

Last modified

2024-08-04

Weaknesses

CWE-347

Affected products

• Ecdsa-java (Starkbank)

References

• https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1
• https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/