Vulnerability Monitor

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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. 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.

Published

2024-07-24T08:15:03.413

Last Modified

2024-11-21T09:50:26.493

Status

Modified

Source

2499f714-1537-4658-8207-48ae4bb9eae9

Severity

CVSSv3.1: 4.3 (MEDIUM)

Weaknesses

Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	haxx	libcurl	8.8.0	Yes

References

http://www.openwall.com/lists/oss-security/2024/07/24/2 Mailing List, Third Party Advisory (2499f714-1537-4658-8207-48ae4bb9eae9)
https://curl.se/docs/CVE-2024-6874.html Vendor Advisory (2499f714-1537-4658-8207-48ae4bb9eae9)
https://curl.se/docs/CVE-2024-6874.json Vendor Advisory (2499f714-1537-4658-8207-48ae4bb9eae9)
https://hackerone.com/reports/2604391 Exploit, Issue Tracking, Technical Description (2499f714-1537-4658-8207-48ae4bb9eae9)
http://www.openwall.com/lists/oss-security/2024/07/24/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://curl.se/docs/CVE-2024-6874.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://curl.se/docs/CVE-2024-6874.json Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/2604391 Exploit, Issue Tracking, Technical Description (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20240822-0004/ (af854a3a-2127-422b-91ae-364da2661108)