Double Free Affecting curl package, versions <8.0.1-r0
Snyk CVSS
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Test your applications- Snyk ID SNYK-ALPINE316-CURL-5422115
- published 20 Mar 2023
- disclosed 30 Mar 2023
Introduced: 20 Mar 2023
CVE-2023-27537 Open this link in a new tabHow to fix?
Upgrade Alpine:3.16 curl to version 8.0.1-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine.
See How to fix? for Alpine:3.16 relevant fixed versions and status.
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.