🛡️ CVE-2024-6874
🟡 CVSS 4.3 — Medium ⚠️ Exploit Public CWE-125 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

libcurl's URL API function [curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode conversions, to and from IDN. Asking to convert a name that is exactly 256 bytes, libcurl ends up reading outside of a stack based buffer when built to use the *macidn* IDN backend. The conversion function then fills up the provided buffer exactly - but does not null terminate the string. This flaw can lead to stack contents accidently getting returned as part of the converted string.

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-125
Public Exploit ⚠️ Yes
Source NVD
Published 2024-07-24
Updated 2026-06-02
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
libcurl

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