DEBIAN-CVE-2024-6874

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2024-6874
Published: 24 Jul 2024, 08:15
Last modified:15 Jun 2026, 19:05

Vulnerability Summary

Overall Risk (default)
low
17/100
CVSS Score
4.3 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Jul 2024, 08:15
Published
Vulnerability first disclosed
15 Jun 2026, 19:05
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Systems

  • debian•curl

    < 8.9.0-1 | < 8.9.0-1

References (1)