{"id":"CVE-2019-14859","details":"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.","aliases":["GHSA-8qxj-f9rh-9fg2","PYSEC-2020-163"],"modified":"2026-08-19T11:47:38.094504489Z","published":"2020-01-02T15:15:11.960Z","related":["SUSE-SU-2019:2891-1","SUSE-SU-2019:2891-2","SUSE-SU-2019:3024-1","openSUSE-SU-2019:2472-1","openSUSE-SU-2019:2474-1","openSUSE-SU-2024:11229-1","openSUSE-SU-2024:13862-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"redhat:ceph_storage","cpes":["cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*","cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"2.0"},{"last_affected":"2.0"},{"introduced":"3.0"},{"last_affected":"3.0"}],"source":"CPE_STRING"},{"extracted_events":[{"introduced":"10"},{"last_affected":"10"},{"introduced":"13"},{"last_affected":"13"},{"introduced":"14"},{"last_affected":"14"},{"introduced":"15"},{"last_affected":"15"}],"source":"CPE_STRING","vendor_product":"redhat:openstack","cpes":["cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*","cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*","cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:*","cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:*"]},{"extracted_events":[{"introduced":"4.0"},{"last_affected":"4.0"}],"source":"CPE_STRING","vendor_product":"redhat:virtualization","cpes":["cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*"]}]},"references":[{"type":"ADVISORY","url":"https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"},{"type":"ADVISORY","url":"https://pypi.org/project/ecdsa/0.13.3/"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"},{"type":"EVIDENCE","url":"https://github.com/warner/python-ecdsa/issues/114"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tlsfuzzer/python-ecdsa","events":[{"introduced":"0"},{"fixed":"7add2213c992f51267eed8288b560f3f4108a28d"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.13.3"}]}}],"versions":["python-ecdsa-0.13.2","python-ecdsa-0.13.1","python-ecdsa-0.13","python-ecdsa-0.12","python-ecdsa-0.11","python-ecdsa-0.10","python-ecdsa-0.9","python-ecdsa-0.8","python-ecdsa-0.7","python-ecdsa-0.6","python-ecdsa-0.5"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-14859.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}