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.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859 | Exploit Issue Tracking Patch Third Party Advisory |
https://github.com/warner/python-ecdsa/issues/114 | Exploit Third Party Advisory |
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 | Release Notes Third Party Advisory |
https://pypi.org/project/ecdsa/0.13.3/ | Release Notes Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2020-01-02T14:15:58
Updated: 2020-01-02T14:15:58
Reserved: 2019-08-10T00:00:00
Link: CVE-2019-14859
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-01-02T15:15:11.960
Modified: 2021-08-04T17:15:13.067
Link: CVE-2019-14859
JSON object: View
Redhat Information
No data.
CWE