DEBIAN-CVE-2024-24806

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2024-24806
Published: 07 Feb 2024, 22:15
Last modified:28 Apr 2026, 20:27

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.3 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Feb 2024, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:27
Last Modified
Vulnerability information updated

Description

libuv is a multi-platform support library with a focus on asynchronous I/O. The `uv_getaddrinfo` function in `src/unix/getaddrinfo.c` (and its windows counterpart `src/win/getaddrinfo.c`), truncates hostnames to 256 characters before calling `getaddrinfo`. This behavior can be exploited to create addresses like `0x00007f000001`, which are considered valid by `getaddrinfo` and could allow an attacker to craft payloads that resolve to unintended IP addresses, bypassing developer checks. The vulnerability arises due to how the `hostname_ascii` variable (with a length of 256 bytes) is handled in `uv_getaddrinfo` and subsequently in `uv__idna_toascii`. When the hostname exceeds 256 characters, it gets truncated without a terminating null byte. As a result attackers may be able to access internal APIs or for websites (similar to MySpace) that allows users to have `username.example.com` pages. Internal services that crawl or cache these user pages can be exposed to SSRF attacks if a malicious user chooses a long vulnerable username. This issue has been addressed in release version 1.48.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Metrics

  • v3.1•HIGH•Score: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Systems

  • debian•libuv1

    < 1.40.0-2+deb11u1 | < 1.44.2-1+deb12u1 | < 1.48.0-1 | < 1.48.0-1

References (1)