Python-Ecdsa Project: >> Python-Ecdsa >> 0.7 Security Vulnerabilities
A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.
CVSS Score
7.4
EPSS Score
0.001
Published
2020-01-02
An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.
CVSS Score
3.7
EPSS Score
0.001
Published
2019-11-26