CVE-2019-14859
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.13.3-1 |
| sid | Fixed | 0.13.3-1 |
| forky | Fixed | 0.13.3-1 |
| bullseye | Fixed | 0.13.3-1 |
| bookworm | Fixed | 0.13.3-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | ecdsa | <0.13.3 | 0.13.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-14859
- https://github.com/warner/python-ecdsa/issues/114
- 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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859
- https://github.com/advisories/GHSA-8qxj-f9rh-9fg2
- https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2020-163.yaml
- https://github.com/warner/python-ecdsa
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
- https://pypi.org/project/ecdsa/0.13.3
- https://www.suse.com/security/cve/CVE-2019-14859.html
- https://pypi.org/project/ecdsa/0.13.3/
- https://security-tracker.debian.org/tracker/CVE-2019-14859
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.