Improper handling of exceptional conditions in [UNKNOWN] python-ecdsa
Priority LOW 37CWE-391Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- 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.
Summary
An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.
Why it matters now
EPSS 0.02407 84th percentileScored 2026-11-07
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 |
|---|---|---|---|---|---|
| [UNKNOWN] | python-ecdsa | 0.13.3 | — | No fix listed | CNA |
| — | ecdsa (PyPI) | before 0.13.3 | 0.13.3 | Patch available | GHSA-pwfw-mgfj-7g3g |
- python-ecdsa Vendor[UNKNOWN] Affected 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-pwfw-mgfj-7g3g
CPE configurations NVD · 1
| 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:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:* Versions before 0.13.3 Vulnerable ·Python-ecdsa Project
Remediation
- Fix · GHSA-pwfw-mgfj-7g3g 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: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 2 | Affected | No fix yet: Fix deferred |
| 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 |
| 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-2019-14853
- 2026-10-03 Alias added: GHSA-pwfw-mgfj-7g3g
References
Advisory 3
Other 5
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
- 20191218 [SECURITY] [DSA 4588-1] python-ecdsa security update
- https://github.com/warner/python-ecdsa/security/advisories/GHSA-pwfw-mgfj-7g3g
- https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2019-177.yaml
- https://github.com/warner/python-ecdsa
More Python-ecdsa Project Python-ecdsa vulnerabilities
- TI-2019-11063 Improper signature verification in Red Hat python-ecdsa CVSS 3.1CRITICAL 9.1
Sources
- CVE-2019-14853 · CVE Program
- CVE-2019-14853 · NVD
- FIRST EPSS
- GHSA-pwfw-mgfj-7g3g · GitHub Advisory Database · CC BY 4.0
- CVE-2019-14853 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences