{"id":"ALPINE-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.","modified":"2026-11-03T06:32:29.441696026Z","published":"2020-01-02T15:15:11.960Z","upstream":["CVE-2019-14859"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2019-14859"}],"affected":[{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}},{"package":{"name":"py3-ecdsa","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/py3-ecdsa?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.3-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-14859.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}