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.

Published: Jan 2, 2020
Updated: May 9, 2024
CVE: CVE-2019-14859
GHSA: GHSA-8qxj-f9rh-9fg2
Severity: Critical
Exploit:

CVSS v3:

Severity: Critical
Score: 9.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v2:

Severity: Medium
Score: 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:N

CWEs:

CWE-347

Affected Software
References

Software	From	Fixed in
python-ecdsa_project / python-ecdsa	-	0.13.3
redhat / ceph_storage	3.0	3.0.x
redhat / ceph_storage	2.0	2.0.x
redhat / openstack	10	10.x
redhat / openstack	14	14.x
redhat / openstack	13	13.x
redhat / openstack	15	15.x
redhat / virtualization	4.0	4.0.x
ecdsa	-	0.13.3

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859
https://github.com/warner/python-ecdsa/issues/114
https://github.com/warner/python-ecdsa/pull/115
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
https://pypi.org/project/ecdsa/0.13.3/

Vulnerability Database

289,599

CVE-2019-14859