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.
CVSS 3.1CRITICAL 9.8·Network·No auth·No interaction·EPSS 0.01027·Published 2021-11-09·Fixed in 1.0.1CWE-347