UBUNTU-CVE-2019-14859

    Dashboard / Vulnerabilities / UBUNTU-CVE-2019-14859

    UBUNTU-CVE-2019-14859

    Published: 14 Oct 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-14859
    Aliases:
    USN-4196-1

    Summary:

    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.

    References: https://ubuntu.com/security/CVE-2019-14859, https://en.bitcoinwiki.org/wiki/Transaction_Malleability, https://github.com/warner/python-ecdsa/pull/115, https://github.com/warner/python-ecdsa/pull/124, https://ubuntu.com/security/notices/USN-4196-1, https://www.cve.org/CVERecord?id=CVE-2019-14859

    Affected packages

    Package

    Name: python-ecdsa

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.13-2ubuntu0.16.04.1

    Affected versions

    0.13-2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2019-14859 | CVE-DB