CVE-2019-19963
5.3
MEDIUM
CVSS 3.1
EPSS 0.36%
Description
An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.
How to fix CVE-2019-19963
To remediate CVE-2019-19963, upgrade the affected package to a fixed version below.
- Debian/wolfssl—upgrade to 4.3.0+dfsg-1 or later
Is CVE-2019-19963 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.3.0+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |