CVE-2024-6874

July 24, 2024, 12:55 p.m.

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.

Weaknesses

Date

Published: July 24, 2024, 8:15 a.m.

Last Modified: July 24, 2024, 12:55 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

2499f714-1537-4658-8207-48ae4bb9eae9

References

http://www.openwall.com/lists/oss-security/2024/07/24/2
2499f714-1537-4658-8207-48ae4bb9eae9
https://curl.se/docs/CVE-2024-6874.html
2499f714-1537-4658-8207-48ae4bb9eae9
https://curl.se/docs/CVE-2024-6874.json
2499f714-1537-4658-8207-48ae4bb9eae9
https://hackerone.com/reports/2604391
2499f714-1537-4658-8207-48ae4bb9eae9