CVE-2019-14859
CRITICALpython-ecdsa < 0.13.3 - Improper Verification of Cryptographic Signature
Title source: llmDescription
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 (4)
Core 4
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859
Release Notes, Third Party Advisory x_refsource_misc
https://pypi.org/project/ecdsa/0.13.3/
Exploit, Third Party Advisory x_refsource_misc
https://github.com/warner/python-ecdsa/issues/114
Scores
CVSS v3
9.1
EPSS
0.0006
EPSS Percentile
20.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-347
Status
published
Products (9)
pypi/ecdsa
0 - 0.13.3PyPI
python-ecdsa_project/python-ecdsa
< 0.13.3
redhat/ceph_storage
2.0
redhat/ceph_storage
3.0
redhat/openstack
10
redhat/openstack
13
redhat/openstack
14
redhat/openstack
15
redhat/virtualization
4.0
Published
Jan 02, 2020
Tracked Since
Feb 18, 2026