CVEvulnerability

CVE-2019-14317

5.3 MEDIUM Published 2019-12-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-12-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-331

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 configurations

• wolfssl wolfssl (< 4.2.0)

Related

Weakness · CWE (1)

  • CWE-331 Insufficient Entropy weakness

References