National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-14859 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 9.1 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score: 7.4 HIGH
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859 Exploit Issue Tracking Patch Third Party Advisory
https://github.com/warner/python-ecdsa/issues/114 Exploit Third Party Advisory
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes Third Party Advisory
https://pypi.org/project/ecdsa/0.13.3/ Release Notes Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
0.13.3

Configuration 2 ( hide )
 cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:openstack:13.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:openstack:14.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:openstack:15.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 4 ( hide )
 cpe:2.3:o:redhat:virtualization:4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-14859
NVD Published Date:
01/02/2020
NVD Last Modified:
01/14/2020