CVE-2024-6874
Fixed in a distro release EPSS <1%CVSS 3.1
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.
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.17 | curl | 8.9.0-r0 |
| Alpine 3.18 | curl | 8.9.0-r0 |
| Alpine 3.19 | curl | 8.9.0-r0 |
| Alpine 3.20 | curl | 8.9.0-r0 |
| Alpine 3.21 | curl | 8.9.0-r0 |
| Alpine 3.22 | curl | 8.9.0-r0 |
| Alpine 3.23 | curl | 8.9.0-r0 |
| Alpine 3.24 | curl | 8.9.0-r0 |
| Debian 13 | curl | 8.9.0-1 |
| Debian 14 | curl | 8.9.0-1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | curl | 8.14.1-150600.4.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | curl | 8.14.1-150600.4.28.1 |
| openSUSE Leap 15.6 | curl | 8.14.1-150600.4.28.1 |
| openSUSE Tumbleweed | curl | 8.9.0-1.1 |