CVE-2019-14317

Published: Dec 11, 2019Modified: Jun 17, 2026

5.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 3.9 / Impact: 1.4

Source: NVD

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.

Affected (1)

Products: Wolfssl: Wolfssl

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Wolfssl Wolfssl	Before 4.2.0

Related CWEs

Insufficient Entropy

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

References (2)

https://www.wolfssl.com/docs/security-vulnerabilities/

Source: cve@mitre.org

PatchVendor Advisory

https://www.wolfssl.com/docs/security-vulnerabilities/

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

Timeline

No history available yet.