Vulnerability Information
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Vulnerability Title
Improper Domain Lookup that potentially leads to SSRF attacks in libuv
Vulnerability 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 Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
libuv 代码问题漏洞
Vulnerability Description
libuv是一个nodejs的跨平台异步IO库。该平台用于抽象 Windows 的 IOCP 及 Unix 的 libev。目前支持的特性有非阻塞；TCP 套接字 ；非阻塞命名管道 ；UDP； 定时器 ；子进程生成；实现异步 DNS ；异步文件系统；正在运行程序路径查找； 线程池调度；TTY控制的ANSI转义代码；文件系统事件；进程间的 IPC 与套接字共享。 libuv 1.48.0之前版本存在代码问题漏洞，该漏洞源于允许攻击者制作解析为非预期IP地址的有效载荷，从而绕过开发人员检查，可能会受到服务器端
CVSS Information
N/A
Vulnerability Type
N/A