CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.1. See the original NVD description below for full technical details.
CVE
CVE-2021-20305
Severity
HIGH
CVSS
8.1
EPSS
1.62%
Original NVD Description
A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.
Related CVEs
Other vulnerabilities affecting the same vendor(s)