Safety vulnerability ID: 37763
The information on this page was manually curated by our Cybersecurity Intelligence Team.
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. See: CVE-2019-14859.
Latest version: 0.19.0
ECDSA cryptographic signature library (pure python)
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.
CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859
MISC:https://github.com/warner/python-ecdsa/issues/114: https://github.com/warner/python-ecdsa/issues/114
MISC:https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3: https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
MISC:https://pypi.org/project/ecdsa/0.13.3/: https://pypi.org/project/ecdsa/0.13.3/
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