VDB
ALPINE-CVE-2020-1967
ALPINE-CVE-2020-1967
PUBLISHED
CVSS 7.5 HIGH
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.9 | openssl | 1.1.1-r2, 1.1.1b-r1, 1.1.1c-r0 |
| Alpine:v3.19 | openssl | 1.1.1b-r0, 1.1.1a-r0, 1.1.1-r5 |
| Alpine:v3.11 | openssl | 1.1.1-r1, 1.1.1-r2, 1.1.1-r3 |
| Alpine:v3.23 | openssl | *, 1.1.1, 1.1.1 |
| Alpine:v3.16 | openssl3 | 1.1.1c-r1, 1.1.1c-r0, * |
| Alpine:v3.14 | openssl | 1.1.1-r3, 1.1.1-r1, 1.1.1-r2 |
| Alpine:v3.15 | openssl | 0, 0, 0 |
| Alpine:v3.13 | openssl | 1.1.1d-r3, 1.1.1d-r4, 1.1.1 |
| Alpine:v3.21 | openssl | 1.1.1a-r0, 0, 1.1.1-r0 |
| Alpine:v3.12 | openssl | 0, 1.1.1, 1.1.1 |
| Alpine:v3.22 | openssl | 1.1.1f-r0, 1.1.1b-r0, 1.1.1a-r1 |
| Alpine:v3.10 | openssl | 0, 1.1.1-r1, 1.1.1-r2 |
| Alpine:v3.17 | openssl | 1.1.1-r0, 0, 1.1.1 |
| Alpine:v3.20 | openssl | 0, *, * |
| Alpine:v3.15 | openssl3 | 1.1.1-r5, 1.1.1-r0, 0 |
| Alpine:v3.18 | openssl | 1.1.1-r2, 0, 0 |
| Alpine:v3.16 | openssl | 0, 0, 0 |
Timeline
- Apr 21, 2020 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch