VDB
ALPINE-CVE-2021-20305
ALPINE-CVE-2021-20305
PUBLISHED
CVSS 8.100000381469727 HIGH
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.
Risk Scores
CVSS v3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.22 | nettle | 3.2-r0, 3.6-r0, 3.5.1-r1 |
| Alpine:v3.13 | nettle | 0, 3.4-r1, 3.4.1-r0 |
| Alpine:v3.15 | nettle | 3.4.1-r0, 2.4-r0, 2.4-r1 |
| Alpine:v3.18 | nettle | 2.5-r0, 2.7-r0, 2.7.1-r0 |
| Alpine:v3.17 | nettle | 3.5.1-r0, 3.3-r1, 0 |
| Alpine:v3.19 | nettle | 3.1.1-r1, 3.2-r0, 3.3-r0 |
| Alpine:v3.23 | nettle | 3.1.1-r1, 3.2-r0, 3.3-r0 |
| Alpine:v3.14 | nettle | 3.3-r0, 3.7-r0, 3.6-r0 |
| Alpine:v3.20 | nettle | 2.4-r0, 3.7.1-r0, 3.7-r0 |
| Alpine:v3.21 | nettle | 3.1.1-r0, 3.2-r0, 3.3-r0 |
| Alpine:v3.16 | nettle | 0, 3.5.1-r0, 3.4.1-r1 |
Timeline
- Apr 5, 2021 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch