CVE-2019-19963

MEDIUM

wolfssl < 4.3.0 - Side-Channel Attack via DSA Nonce Modular Inversion

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable

Scores

CVSS v3 5.3
EPSS 0.0095
EPSS Percentile 56.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

Status published
Products (1)
wolfssl/wolfssl < 4.3.0
Published Dec 25, 2019
Tracked Since Feb 18, 2026