#VU41118 Input validation error in wolfSSL - CVE-2019-19963
Published: December 25, 2019 / Updated: August 9, 2020
Vulnerability identifier: #VU41118
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-19963
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
wolfSSL
wolfSSL
Software vendor:
wolfSSL
wolfSSL
Description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
Remediation
Install update from vendor's website.