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
Affected Vendors & Products
Advisories
Source | ID | Title |
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DLA-1978-1 | python-ecdsa security update |
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DSA-4588-1 | python-ecdsa security update |
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EUVD-2020-0076 | 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. |
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GHSA-8qxj-f9rh-9fg2 | Improper Verification of Cryptographic Signature in Pure-Python ECDSA |
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USN-4196-1 | python-ecdsa vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.

Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-05T00:26:39.127Z
Reserved: 2019-08-10T00:00:00
Link: CVE-2019-14859

No data.

Status : Modified
Published: 2020-01-02T15:15:11.960
Modified: 2024-11-21T04:27:30.923
Link: CVE-2019-14859


No data.