CVE-2024-6874
4.3
MEDIUM
CVSS 3.1
EPSS 0.99%
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.
How to fix CVE-2024-6874
To remediate CVE-2024-6874, upgrade the affected package to a fixed version below.
- —upgrade to 8.9.0-r0 or later
- —upgrade to 8.9.0-1 or later
Is CVE-2024-6874 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 8.9.0-r0
- from 0, < 8.9.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |