Vulnerability · Published Feb 7, 2024 · Assigned by GitHub_M
CVE-2024-24806Improper Domain Lookup that potentially leads to SSRF attacks in libuv
High 7.3
In plain English
A high-severity server-side request forgery in libuv from libuv. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | libuv | 1:1.41.1-2.el8_10 | ALSA-2024:4247 |
| AlmaLinux:9 | libuv | 1:1.42.0-2.el9_4 | ALSA-2024:4756 |
| AlmaLinux:8 | libuv-devel | 1:1.41.1-2.el8_10 | ALSA-2024:4247 |
| AlmaLinux:9 | libuv-devel | 1:1.42.0-2.el9_4 | ALSA-2024:4756 |
| Alpine:v3.20 | libuv | 1.48.0-r0 | ALPINE-CVE-2024-24806 |
| Alpine:v3.21 | libuv | 1.48.0-r0 | ALPINE-CVE-2024-24806 |
| Alpine:v3.22 | libuv | 1.48.0-r0 | ALPINE-CVE-2024-24806 |
| Alpine:v3.23 | libuv | 1.48.0-r0 | ALPINE-CVE-2024-24806 |
| Alpine:v3.24 | libuv | 1.48.0-r0 | ALPINE-CVE-2024-24806 |
| Debian:12 | libuv1 | 1.44.2-1+deb12u1 | DSA-5638-1 |
| Debian:12 | libuv1 | 1.44.2-1+deb12u1 | DEBIAN-CVE-2024-24806 |
| Debian:13 | libuv1 | 1.48.0-1 | DEBIAN-CVE-2024-24806 |
| Debian:14 | libuv1 | 1.48.0-1 | DEBIAN-CVE-2024-24806 |
| Rocky Linux:8 | libuv | 1:1.41.1-2.el8_10 | RLSA-2024:4247 |
| Rocky Linux:9 | libuv | 1:1.42.0-2.el9_4 | RLSA-2024:4756 |
| Ubuntu:22.04:LTS | libuv1 | 1.43.0-1ubuntu0.1 | UBUNTU-CVE-2024-24806 |
| Ubuntu:22.04:LTS | libuv1 | 1.43.0-1ubuntu0.1 | USN-6666-1 |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://github.com/libuv/libuv/security/advisories/GHSA-f74f-cvh7-c6q6 x_refsource_CONFIRM
- https://github.com/libuv/libuv/commit/0f2d7e784a256b54b2385043438848047bc2a629 x_refsource_MISC
- https://github.com/libuv/libuv/commit/3530bcc30350d4a6ccf35d2f7b33e23292b9de70 x_refsource_MISC
- https://github.com/libuv/libuv/commit/c858a147643de38a09dd4164758ae5b685f2b488 x_refsource_MISC
- https://github.com/libuv/libuv/commit/e0327e1d508b8207c9150b6e582f0adf26213c39 x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2024/02/08/2
- http://www.openwall.com/lists/oss-security/2024/02/11/1
- https://lists.debian.org/debian-lts-announce/2024/03/msg00005.html
- http://www.openwall.com/lists/oss-security/2024/03/11/1
- https://security.netapp.com/advisory/ntap-20240605-0008/
- https://gitlab.kitware.com/cmake/cmake/-/issues/26112