Vulnerability in Python-Ecdsa Project
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.
EPSS: 0.015 (73.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 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.
Affected products
- Python-ecdsa_project Python-ecdsa
- Red Hat Python-ecdsa — versions all python-ecdsa versions before 0.13.3
- Redhat Ceph_storage — versions 2.0, 3.0
- Redhat Openstack — versions 10, 13, 14
- Redhat Virtualization — versions 4.0
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- secalert@redhat.com (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-14859?
- CVE-2019-14859 is a critical-severity vulnerability in Python-Ecdsa Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.1/10. Published 2020-01-02.
- How severe is CVE-2019-14859?
- Critical severity. CVSS v3 base score is 9.1 out of 10.