CVE-2019-19963

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.

5.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.36%

Third-Party Advisory github.com Third-Party Advisory github.com

Affected: n/a n/a

References

Link	Tags
https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable	third party advisory release notes
https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2019-19963?: CVE-2019-19963 has been scored as a medium severity vulnerability.
How to fix CVE-2019-19963?: To fix CVE-2019-19963, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-19963 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2019-19963 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.