Alpine Linux: CVE-2024-6874: Out-of-bounds Read

Alpine Linux: CVE-2024-6874: Out-of-bounds Read

Severity

3

CVSS

(AV:N/AC:M/Au:S/C:P/I:N/A:N)

Published

07/24/2024

Created

08/23/2024

Added

08/22/2024

Modified

10/14/2024

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.

Solution(s)

• alpine-linux-upgrade-curl

References

• https://attackerkb.com/topics/cve-2024-6874
• CVE - 2024-6874
• https://security.alpinelinux.org/vuln/CVE-2024-6874