CVE-2024-6874
macidn punycode buffer overread
- State
- Published
- Severity
- 3.1 Low
- Published
- Jul 24, 2024
- Updated
- Feb 13, 2025
- Reserved
- Jul 18, 2024
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.1 Low | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
curlcurl |
|
References
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