CVE Vulnerability

CVE-2019-14859

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.

6.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

9.1 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

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

Configuration 1

cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:*
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
Information

Published : 2020-01-02 03:15

Updated : 2021-08-04 05:15

NVD link : CVE-2019-14859

Mitre link : CVE-2019-14859

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature