CVE-2019-14317
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductWolfssl
PublishedDec 11, 2019
First seenDec 11, 2019
How to fix
Update
- wolfssl wolfssl4.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wolfssl wolfssl | v < 4.2.0 | 4.2.0 |
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