CVE-2023-27537
Severity
5.9MEDIUM
EPSS
0.1%
top 75.71%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedMar 30
Description
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 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6
Affected Packages5 packages
🔴Vulnerability Details
3📋Vendor Advisories
3Microsoft▶
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 b↗2023-03-14
Debian▶
CVE-2023-27537: curl - A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data betw...↗2023