VDB
ALPINE-CVE-2023-27537
ALPINE-CVE-2023-27537
PUBLISHED
CVSS 5.900000095367432 MEDIUM
Record from OSV · Published March 30, 2023
A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| curl | Alpine:v3.22 | 8.0.0-r0 |
| curl | Alpine:v3.18 | 8.0.0-r0 |
| curl | Alpine:v3.19 | 8.0.0-r0 |
| curl | Alpine:v3.15 | 8.0.1-r0 |
| curl | Alpine:v3.23 | 8.0.0-r0 |
| curl | Alpine:v3.17 | 7.88.1-r1 |
| curl | Alpine:v3.14 | 8.0.1-r0 |
| curl | Alpine:v3.20 | 8.0.0-r0 |
| curl | Alpine:v3.16 | 8.0.1-r0 |
| curl | Alpine:v3.24 | 8.0.0-r0 |
| curl | Alpine:v3.21 | 8.0.0-r0 |
Risk scores
CVSS 3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.22 | curl | 7.88.0-r1, 7.66.0-r0, 0 |
| Alpine:v3.18 | curl | 7.84.0-r0, 7.21.3-r1, 0 |
| Alpine:v3.19 | curl | 7.19.4-r0, 0, 7.19.2-r0 |
| Alpine:v3.15 | curl | 7.65.1-r0, 7.78.0-r1, 7.35.0-r0 |
| Alpine:v3.23 | curl | 7.83.1-r1, 0, 7.19.2-r0 |
| Alpine:v3.17 | curl | 7.42.1-r1, 7.55.0-r0, 7.79.1-r0 |
| Alpine:v3.14 | curl | 7.52.1-r1, 0, 7.19.2-r1 |
| Alpine:v3.20 | curl | 7.20.1-r0, 7.84.0-r1, 7.49.1-r0 |
| Alpine:v3.16 | curl | 7.69.0-r1, 7.19.2-r0, 7.19.2-r1 |
| Alpine:v3.24 | curl | 0 |
| Alpine:v3.21 | curl | 7.54.1-r0, 7.73.0-r0, 7.56.1-r0 |
Timeline
- Mar 30, 2023 CVE Published
- Aug 7, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln ALPINE-CVE-2023-27537
vulnetix vdb fixes ALPINE-CVE-2023-27537Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/ALPINE-CVE-2023-27537/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart