The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27209
Reference (s):
- https://eprint.iacr.org/2021/640
- https://github.com/kmackay/micro-ecc/commit/1b5f5cea5145c96dd8791b9b2c41424fc74c2172
- https://github.com/kmackay/micro-ecc/releases
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.html