跳转到帖子

Amazon Linux AMI 2: CVE-2024-24806: Security patch for libuv (ALAS-2024-2474)

recommended_posts

发布于
  • 超级管理员

Amazon Linux AMI 2: CVE-2024-24806: Security patch for libuv (ALAS-2024-2474)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
02/07/2024
Created
03/06/2024
Added
03/05/2024
Modified
01/28/2025

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.

Solution(s)

  • amazon-linux-ami-2-upgrade-libuv
  • amazon-linux-ami-2-upgrade-libuv-debuginfo
  • amazon-linux-ami-2-upgrade-libuv-devel
  • amazon-linux-ami-2-upgrade-libuv-static

References

  • https://attackerkb.com/topics/cve-2024-24806
  • AL2/ALAS-2024-2474
  • CVE - 2024-24806
  • 查看数 713
  • 已创建
  • 最后回复

参与讨论

你可立刻发布并稍后注册。 如果你有帐户,立刻登录发布帖子。
注意:你的帖子需要版主批准后才能看到。

游客
回帖…