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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-27209
• kmackay/micro-ecc@1b5f5ce
• https://eprint.iacr.org/2021/640
• 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