Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python-Ecdsa Project | Python-Ecdsa | < 0.13.3 |
| Redhat | Ceph Storage | 2.0 |
| Redhat | Openstack | 10 |
| Redhat | Virtualization | 4.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859ExploitIssue TrackingPatch
- https://github.com/warner/python-ecdsa/issues/114ExploitThird Party Advisory
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3Release NotesThird Party Advisory
- https://pypi.org/project/ecdsa/0.13.3/Release NotesThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859ExploitIssue TrackingPatch
- https://github.com/warner/python-ecdsa/issues/114ExploitThird Party Advisory
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3Release NotesThird Party Advisory
- https://pypi.org/project/ecdsa/0.13.3/Release NotesThird Party Advisory
FAQ
What is CVE-2019-14859?
CVE-2019-14859 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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,...
How severe is CVE-2019-14859?
CVE-2019-14859 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-14859?
Check the references section above for vendor advisories and patch information. Affected products include: Python-Ecdsa Project Python-Ecdsa, Redhat Ceph Storage, Redhat Openstack, Redhat Virtualization.