CVE-2019-19963

MEDIUM

wolfSSL <4.3.0 - Info Disclosure

Title source: llm

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)

[Patch, Third Party Advisory] https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190

View Patch ZIP pw:eip

[Release Notes, Third Party Advisory] https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable

Scores

CVSS v3 5.3

EPSS 0.0036

EPSS Percentile 57.9%

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