VDB
ALPINE-CVE-2023-28319
ALPINE-CVE-2023-28319
PUBLISHED
CVSS 7.5 HIGH
A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.15 | curl | 0, 7.19.2-r1, 7.19.4-r0 |
| Alpine:v3.18 | curl | 7.81.0-r0, 8.0.1-r2, 8.0.1-r1 |
| Alpine:v3.20 | curl | 7.21.4-r0, 7.21.3-r0, 0 |
| Alpine:v3.16 | curl | 8.0.1-r0, 7.83.1-r6, 7.83.1-r5 |
| Alpine:v3.22 | curl | 8.0.1-r3, 0, 7.19.2-r1 |
| Alpine:v3.21 | curl | 7.19.2-r0, 7.53.1-r1, 7.70.0-r1 |
| Alpine:v3.17 | curl | 0, 7.19.2-r0, 7.19.2-r1 |
| Alpine:v3.19 | curl | 7.35.0-r0, 8.0.1-r3, 8.0.1-r2 |
| Alpine:v3.23 | curl | 7.27.0-r0, 8.0.1-r3, 8.0.1-r2 |
Timeline
- May 26, 2023 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch