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CVE-2023-27537

CVE-2023-27537

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 5.9 · Medium · EPSS 1.9% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • https://github.com/curl/curl

    Versions
    • Fixed in 8.0.0: Affected

    No fix published

  • curl Debian:12

    Affected ranges
    • ECOSYSTEM: < 7.88.1-7

    Update to 7.88.1-7

  • curl Debian:13

    Affected ranges
    • ECOSYSTEM: < 7.88.1-7

    Update to 7.88.1-7

  • curl Debian:14

    Affected ranges
    • ECOSYSTEM: < 7.88.1-7

    Update to 7.88.1-7

Original sources

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