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.
Metrics
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References
History
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MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2020-01-02T14:15:58
Updated: 2024-08-05T00:26:39.127Z
Reserved: 2019-08-10T00:00:00
Link: CVE-2019-14859
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2020-01-02T15:15:11.960
Modified: 2021-08-04T17:15:13.067
Link: CVE-2019-14859
Redhat