Improper signature verification in Red Hat python-ecdsa
Priority MEDIUM 42CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 2 fixed, 7 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-347.
Summary
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.
Why it matters now
EPSS 0.01534 74th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial ecdsa (PyPI): 0.13.3Red Hat: 1 advisoryRed Hat: 2 fixed, 7 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | python-ecdsa | all python-ecdsa versions before 0.13.3 | — | No fix listed | CNA |
| — | ecdsa (PyPI) | before 0.13.3 | 0.13.3 | Patch available | GHSA-8qxj-f9rh-9fg2 |
- python-ecdsa VendorRed Hat Affected all python-ecdsa versions before 0.13.3 Fixed in — No fix listed CNA
- ecdsa (PyPI) Vendor— Affected before 0.13.3 Fixed in 0.13.3 Patch available GHSA-8qxj-f9rh-9fg2
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:* | before 0.13.3 | Vulnerable | Python-ecdsa Project |
| cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* | 10 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* | 13 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:* | 14 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:* | 15 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
- cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:* Versions before 0.13.3 Vulnerable ·Python-ecdsa Project
- cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:* Versions 14 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:* Versions 15 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
Remediation
- Fix · GHSA-8qxj-f9rh-9fg2 ecdsa (PyPI) Fixed in 0.13.3 Advisory →
Red Hat 1 advisory
- RHSA-2021:4702 Released 2021-11-16 · Red Hat rating ModerateSatellite 6.10 Release
- Red Hat Satellite 6.10 candlepin-4.0.9-1.el7sat, foreman-2.5.2.17-2.el7sat, python-aiohttp-3.7.4-1.el7pc +14
- Red Hat Satellite Capsule 6.10 foreman-2.5.2.17-2.el7sat, python-aiohttp-3.7.4-1.el7pc, python-ecdsa-0.13.3-2.el7pc +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 2 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 15 (Stein) | Affected | No fix planned: Will not fix |
| Red Hat Storage 3 | Affected | No fix yet: Fix deferred |
| Red Hat Virtualization 4 | Affected | No fix planned: Will not fix |
| Red Hat Satellite 6.10 | Fixed | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6.10 | Fixed | RHSA-2021:4702 |
Not affected: 3 products
- CloudForms Management Engine 5
- Red Hat Satellite 6.10
- Red Hat Satellite Capsule 6.10
Timeline
- 2026-10-02 Threatist record created from CVE-2019-14859
- 2026-10-03 Alias added: GHSA-8qxj-f9rh-9fg2
References
Exploit 2
Advisory 4
Other 7
- https://github.com/warner/python-ecdsa/pull/115
- https://github.com/tlsfuzzer/python-ecdsa/commit/3427fa29f319b27898a28601955807abb44c0830
- https://github.com/tlsfuzzer/python-ecdsa/commit/9080d1d5ac533da0de00466aaffb49bee808bb4e
- https://github.com/tlsfuzzer/python-ecdsa/commit/b0ea52bb3aa9a16c9a4a91fdc0041edbfed10b31
- https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2020-163.yaml
- https://github.com/warner/python-ecdsa
- https://pypi.org/project/ecdsa/0.13.3
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Sources
- CVE-2019-14859 · CVE Program
- CVE-2019-14859 · NVD
- FIRST EPSS
- GHSA-8qxj-f9rh-9fg2 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-14859 · Red Hat security data · CC BY 4.0
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