{"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":"2025-12-03T22:55:24.565549Z","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":"0"},{"fixed":"1.48.0-r0"}]}],"versions":["0.10.25-r0","0.10.27-r0","0.10.28-r0","0.10.29-r0","1.10.1-r0","1.10.2-r0","1.11.0-r0","1.11.0-r1","1.13.1-r0","1.14.0-r0","1.14.0-r1","1.14.1-r0","1.15.0-r0","1.17.0-r0","1.18.0-r0","1.19.1-r0","1.19.2-r0","1.20.2-r0","1.21.0-r0","1.22.0-r0","1.23.2-r0","1.25.0-r0","1.26.0-r0","1.28.0-r0","1.29.1-r0","1.30.1-r0","1.31.0-r0","1.32.0-r0","1.33.1-r0","1.33.1-r1","1.34.0-r0","1.34.1-r0","1.34.2-r0","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.39.0-r0","1.4.2-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.1-r0","1.42.0-r0","1.43.0-r0","1.43.0-r1","1.44.0-r0","1.44.1-r0","1.44.2-r0","1.44.2-r1","1.44.2-r2","1.44.2-r3","1.45.0-r0","1.46.0-r0","1.47.0-r0","1.5.0-r0","1.6.1-r0","1.7.0-r0","1.7.3-r0","1.7.4-r0","1.7.5-r0","1.8.0-r0","1.9.0-r0","1.9.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/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":"0"},{"fixed":"1.48.0-r0"}]}],"versions":["0.10.25-r0","0.10.27-r0","0.10.28-r0","0.10.29-r0","1.10.1-r0","1.10.2-r0","1.11.0-r0","1.11.0-r1","1.13.1-r0","1.14.0-r0","1.14.0-r1","1.14.1-r0","1.15.0-r0","1.17.0-r0","1.18.0-r0","1.19.1-r0","1.19.2-r0","1.20.2-r0","1.21.0-r0","1.22.0-r0","1.23.2-r0","1.25.0-r0","1.26.0-r0","1.28.0-r0","1.29.1-r0","1.30.1-r0","1.31.0-r0","1.32.0-r0","1.33.1-r0","1.33.1-r1","1.34.0-r0","1.34.1-r0","1.34.2-r0","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.39.0-r0","1.4.2-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.1-r0","1.42.0-r0","1.43.0-r0","1.43.0-r1","1.44.0-r0","1.44.1-r0","1.44.2-r0","1.44.2-r1","1.44.2-r2","1.44.2-r3","1.45.0-r0","1.46.0-r0","1.47.0-r0","1.5.0-r0","1.6.1-r0","1.7.0-r0","1.7.3-r0","1.7.4-r0","1.7.5-r0","1.8.0-r0","1.9.0-r0","1.9.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/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":"0"},{"fixed":"1.48.0-r0"}]}],"versions":["0.10.25-r0","0.10.27-r0","0.10.28-r0","0.10.29-r0","1.10.1-r0","1.10.2-r0","1.11.0-r0","1.11.0-r1","1.13.1-r0","1.14.0-r0","1.14.0-r1","1.14.1-r0","1.15.0-r0","1.17.0-r0","1.18.0-r0","1.19.1-r0","1.19.2-r0","1.20.2-r0","1.21.0-r0","1.22.0-r0","1.23.2-r0","1.25.0-r0","1.26.0-r0","1.28.0-r0","1.29.1-r0","1.30.1-r0","1.31.0-r0","1.32.0-r0","1.33.1-r0","1.33.1-r1","1.34.0-r0","1.34.1-r0","1.34.2-r0","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.39.0-r0","1.4.2-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.1-r0","1.42.0-r0","1.43.0-r0","1.43.0-r1","1.44.0-r0","1.44.1-r0","1.44.2-r0","1.44.2-r1","1.44.2-r2","1.44.2-r3","1.45.0-r0","1.46.0-r0","1.47.0-r0","1.5.0-r0","1.6.1-r0","1.7.0-r0","1.7.3-r0","1.7.4-r0","1.7.5-r0","1.8.0-r0","1.9.0-r0","1.9.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/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":"0"},{"fixed":"1.48.0-r0"}]}],"versions":["0.10.25-r0","0.10.27-r0","0.10.28-r0","0.10.29-r0","1.10.1-r0","1.10.2-r0","1.11.0-r0","1.11.0-r1","1.13.1-r0","1.14.0-r0","1.14.0-r1","1.14.1-r0","1.15.0-r0","1.17.0-r0","1.18.0-r0","1.19.1-r0","1.19.2-r0","1.20.2-r0","1.21.0-r0","1.22.0-r0","1.23.2-r0","1.25.0-r0","1.26.0-r0","1.28.0-r0","1.29.1-r0","1.30.1-r0","1.31.0-r0","1.32.0-r0","1.33.1-r0","1.33.1-r1","1.34.0-r0","1.34.1-r0","1.34.2-r0","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.39.0-r0","1.4.2-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.1-r0","1.42.0-r0","1.43.0-r0","1.43.0-r1","1.44.0-r0","1.44.1-r0","1.44.2-r0","1.44.2-r1","1.44.2-r2","1.44.2-r3","1.45.0-r0","1.46.0-r0","1.47.0-r0","1.5.0-r0","1.6.1-r0","1.7.0-r0","1.7.3-r0","1.7.4-r0","1.7.5-r0","1.8.0-r0","1.9.0-r0","1.9.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2024-24806.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}