CVE-2019-14317

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CVSS 3.1

5.3 medium

EPSS

2%p77

Published

Dec 11, 2019 (Dec 11, 2019)

Modified

Jun 17, 2026

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.

Vendors: wolfssl
Products: wolfssl
Weakness: CWE-331
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.8%)

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