{"id":"ALPINE-CVE-2024-24806","details":"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.","modified":"2026-09-15T08:17:47.888104307Z","published":"2024-02-07T22:15:10.173Z","upstream":["CVE-2024-24806"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2024-24806"}],"affected":[{"package":{"name":"libuv","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/libuv?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.24.0"},{"fixed":"1.48.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}},{"package":{"name":"libuv","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/libuv?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.24.0"},{"fixed":"1.48.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}},{"package":{"name":"libuv","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/libuv?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.24.0"},{"fixed":"1.48.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}},{"package":{"name":"libuv","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/libuv?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.24.0"},{"fixed":"1.48.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}},{"package":{"name":"libuv","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/libuv?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.24.0"},{"fixed":"1.48.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}