Vulnerability Details : 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.
Exploit prediction scoring system (EPSS) score for CVE-2019-14317
Probability of exploitation activity in the next 30 days: 0.15%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 51 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-14317
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2019-14317
-
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.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-14317
-
https://www.wolfssl.com/docs/security-vulnerabilities/
wolfSSL Security Vulnerabilities | wolfSSL Embedded SSL/TLS LibraryPatch;Vendor Advisory
Products affected by CVE-2019-14317
- cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*