DEBIAN-CVE-2019-14859

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2019-14859
Published: 02 Jan 2020, 15:15
Last modified:28 Apr 2026, 20:20

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Jan 2020, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:20
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Systems

  • debian•python-ecdsa

    < 0.13.3-1 | < 0.13.3-1 | < 0.13.3-1 | < 0.13.3-1

References (1)