medium4.3
CVE-2024-6874
libcurl's URL API function [curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode conversions, to and from IDN.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Haxx | Libcurl | Version 8.8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- http://www.openwall.com/lists/oss-security/2024/07/24/2
- https://curl.se/docs/CVE-2024-6874.html
- https://curl.se/docs/CVE-2024-6874.json
- https://hackerone.com/reports/2604391
- http://www.openwall.com/lists/oss-security/2024/07/24/2
- https://curl.se/docs/CVE-2024-6874.html
- https://curl.se/docs/CVE-2024-6874.json
- https://hackerone.com/reports/2604391
- https://security.netapp.com/advisory/ntap-20240822-0004/