Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Libcurl | 8.8.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2024/07/24/2Mailing ListThird Party Advisory
- https://curl.se/docs/CVE-2024-6874.htmlVendor Advisory
- https://curl.se/docs/CVE-2024-6874.jsonVendor Advisory
- https://hackerone.com/reports/2604391ExploitIssue TrackingTechnical Description
- http://www.openwall.com/lists/oss-security/2024/07/24/2Mailing ListThird Party Advisory
- https://curl.se/docs/CVE-2024-6874.htmlVendor Advisory
- https://curl.se/docs/CVE-2024-6874.jsonVendor Advisory
- https://hackerone.com/reports/2604391ExploitIssue TrackingTechnical Description
- https://security.netapp.com/advisory/ntap-20240822-0004/
FAQ
What is CVE-2024-6874?
CVE-2024-6874 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 ...
How severe is CVE-2024-6874?
CVE-2024-6874 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-6874?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Libcurl.