CVE-2019-14859

Description

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.

CVSS Version 3.1

nvd

CVE ID: CVE-2019-14859
Base Score: 9.1
Base Severity: CRITICAL
Vector String:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Impact Score: 5.2
Exploitability Score: 3.9

CVSS Version 3.0

redhat

CVE ID: CVE-2019-14859
Base Score: 7.4
Base Severity: HIGH
Vector String:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS Version 2.0

nvd

CVE ID: CVE-2019-14859
Base Score: 6.4
Base Severity: MEDIUM
Vector String:AV:N/AC:L/Au:N/C:P/I:P/A:N

Refrence: NVDMITRE