CVE-2024-6874

Aliases:DEBIAN-CVE-2024-6874ALPINE-CVE-2024-6874
Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 24 Jul 2024, 07:36
Last modified:13 Feb 2025, 17:58

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
4.3 MEDIUM
v3.1 (nvd)
EPSS Score
0.79% LOW
1% probability -0.20%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

24 Jul 2024, 07:36
Published
Vulnerability first disclosed
13 Feb 2025, 17:58
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•LOW•Score: 3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
  • v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Trends

Current EPSS score: 0.79%• Percentile: 55%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • alpine•curl

    < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0 | < 8.9.0-r0

  • curl•curl

    8.8.0

  • debian•curl

    < 8.9.0-1 | < 8.9.0-1

  • haxx•libcurl

    8.8.0

References (7)