CVE-2019-19963 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190 https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3