VULNERABILITY INTELLIGENCE

CVE-2019-14317

CVSS score5.3 MEDIUM

EPSS probability1.75%

CISA KEVNot currently listed

Published2019-12-11

Last modified2026-06-17

Description

wolfSSL and wolfCrypt 4.1.0 and earlier (formerly known as CyaSSL) generate biased DSA nonces. This allows a remote attacker to compute the long term private key from several hundred DSA signatures via a lattice attack. The issue occurs because dsa.c fixes two bits of the generated nonces.