| Package | Affected versions | Patched versions |
|---|---|---|
| wolfssl | < 4.2.0 | 4.2.0 |
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.
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