What is CVE-2019-14317?

CVE-2019-14317 is a medium-severity vulnerability in Wolfssl, classified under Insufficient Entropy. CVSS score: 5.3/10. Published 2019-12-11.

How severe is CVE-2019-14317?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Wolfssl

CVE-2019-14317

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.

EPSS: 0.018 (75.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Wolfssl
N/a — versions n/a

Weakness classification (CWE)

CWE-331 — Insufficient Entropy

References

cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-14317?: CVE-2019-14317 is a medium-severity vulnerability in Wolfssl, classified under Insufficient Entropy. CVSS score: 5.3/10. Published 2019-12-11.
How severe is CVE-2019-14317?: Medium severity. CVSS v3 base score is 5.3 out of 10.