CVE-2024-24806
Published: February 9, 2024Last modified: May 22, 2024
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.3 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | LOW |
| Availability impact | LOW |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libuv | Vulnerable (1.44.2-r0) |
| nodejs | Fixed (18.19.1-r0) | ||
| Stream | libuv | Fixed (1.48.0-r0) | |
| nodejs | Fixed (20.11.1-r0) | ||
| Liberica NIK | 23 (JDK 17) | standard (nodejs) | Fixed (23.0.4+1) |
| 23 (JDK 21) | standard (nodejs) | Fixed (23.1.3+2) | |
| 24 (JDK 22) | nodejs | Fixed (24.0.1+1) |
References
- http://www.openwall.com/lists/oss-security/2024/02/08/2
- http://www.openwall.com/lists/oss-security/2024/02/11/1
- http://www.openwall.com/lists/oss-security/2024/03/11/1
- https://github.com/libuv/libuv/commit/0f2d7e784a256b54b2385043438848047bc2a629
- https://github.com/libuv/libuv/commit/3530bcc30350d4a6ccf35d2f7b33e23292b9de70
- https://github.com/libuv/libuv/commit/c858a147643de38a09dd4164758ae5b685f2b488
- https://github.com/libuv/libuv/commit/e0327e1d508b8207c9150b6e582f0adf26213c39
- https://github.com/libuv/libuv/security/advisories/GHSA-f74f-cvh7-c6q6
- https://gitlab.kitware.com/cmake/cmake/-/issues/26112
- https://lists.debian.org/debian-lts-announce/2024/03/msg00005.html
- https://security.netapp.com/advisory/ntap-20240605-0008/