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VULNERABILITIES

CVE-2024-6874 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA: CISA-ADPCVSS-B:3.1 LOWVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://curl.se/docs/CVE-2024-6874.html curlVendor Advisory
https://curl.se/docs/CVE-2024-6874.json curlVendor Advisory
https://hackerone.com/reports/2604391 curlExploitIssue TrackingTechnical Description
http://www.openwall.com/lists/oss-security/2024/07/24/2 curlMailing ListThird Party Advisory
https://curl.se/docs/CVE-2024-6874.html CVEVendor Advisory

see all 9 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds Read[email protected]

Affected Products

ProductVersions
haxx libcurl
8.8.0

CPE

  • cpe:2.3:a:haxx:libcurl:8.8.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2024-6874
NVD Published Date:
Jul 24, 2024
NVD Last Modified:
Jun 17, 2026
Source:
curl
CVE-2024-6874 Details - Not Deferred