| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1978-1, DSA-4588-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python-ecdsa (PTS) | jessie, jessie (lts) | 0.11-1+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 0.13-2+deb9u1 | fixed | |
| buster (security), buster, buster (lts) | 0.13-3+deb10u1 | fixed | |
| bullseye | 0.16.1-1 | fixed | |
| bookworm | 0.18.0-3 | fixed | |
| sid, trixie | 0.19.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python-ecdsa | source | wheezy | (unfixed) | end-of-life | ||
| python-ecdsa | source | jessie | 0.11-1+deb8u1 | DLA-1978-1 | ||
| python-ecdsa | source | stretch | 0.13-2+deb9u1 | DSA-4588-1 | ||
| python-ecdsa | source | buster | 0.13-3+deb10u1 | DSA-4588-1 | ||
| python-ecdsa | source | (unstable) | 0.13.3-1 |
https://github.com/warner/python-ecdsa/issues/114
Upstream patches:
https://github.com/warner/python-ecdsa/pull/115
https://github.com/warner/python-ecdsa/pull/124
Fix for CVE-2019-14853 fixes as well CVE-2019-14859.