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Vulnerabilities / CVE-2019-14859

critical

CVE-2019-14859

python-ecdsa: DER encoding is not being verified in signatures

Published Modified CWE 347
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GHSA9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Red Hat7.4CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA. Rated lower by Amazon (high), Red Hat (medium), Ubuntu (medium).

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.

Affected packages and fixed versions

SourcePackageFixed in
pip::GitHub Security Advisory pipecdsa0.13.3
alpine 3.11py3-ecdsa0.13.3-r0
alpine 3.12py3-ecdsa0.13.3-r0
alpine 3.13py3-ecdsa0.13.3-r0
alpine 3.14py3-ecdsa0.13.3-r0
alpine 3.15py3-ecdsa0.13.3-r0
alpine 3.16py3-ecdsa0.13.3-r0
alpine 3.17py3-ecdsa0.13.3-r0
alpine 3.18py3-ecdsa0.13.3-r0
alpine 3.19py3-ecdsa0.13.3-r0
alpine 3.20py3-ecdsa0.13.3-r0
alpine 3.21py3-ecdsa0.13.3-r0
Show all 34 entries from 32 sources
SourcePackageFixed in
pip::GitHub Security Advisory pipecdsa0.13.3
alpine 3.11py3-ecdsa0.13.3-r0
alpine 3.12py3-ecdsa0.13.3-r0
alpine 3.13py3-ecdsa0.13.3-r0
alpine 3.14py3-ecdsa0.13.3-r0
alpine 3.15py3-ecdsa0.13.3-r0
alpine 3.16py3-ecdsa0.13.3-r0
alpine 3.17py3-ecdsa0.13.3-r0
alpine 3.18py3-ecdsa0.13.3-r0
alpine 3.19py3-ecdsa0.13.3-r0
alpine 3.20py3-ecdsa0.13.3-r0
alpine 3.21py3-ecdsa0.13.3-r0
alpine 3.22py3-ecdsa0.13.3-r0
alpine 3.23py3-ecdsa0.13.3-r0
alpine 3.24py3-ecdsa0.13.3-r0
alpine edgepy3-ecdsa0.13.3-r0
amazon linux 1python26-ecdsa0.11-3.4.amzn1
amazon linux 1python27-ecdsa0.11-3.4.amzn1
debian 10python-ecdsa0.13-3+deb10u1
debian 11python-ecdsa0.13.3-1
debian 12python-ecdsa0.13.3-1
debian 13python-ecdsa0.13.3-1
debian 14python-ecdsa0.13.3-1
debian 8python-ecdsa0.11-1+deb8u1
debian 9python-ecdsa0.13-2+deb9u1
echopython-ecdsa0.13.3-1
Red Hatpython-ecdsano fix listed
Red Hatpython3-ecdsano fix listed
ubuntu 16.04python-ecdsa0.13-2ubuntu0.16.04.1
ubuntu 16.04-ESMpython-ecdsa0.13-2ubuntu0.16.04.1
ubuntu 18.04python-ecdsa0.13-2ubuntu0.18.04.1
ubuntu 18.04-ESMpython-ecdsa0.13-2ubuntu0.18.04.1
ubuntu 19.04python-ecdsa0.13-3ubuntu0.1
ubuntu 19.10python-ecdsa0.13.2-2ubuntu0.1

References

All 18 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.