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CVE-2024-24806 Improper access control

Routine
Remediate Within 6 Months

CVE Information

Original CVE data

Published:
Updated:

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.

CWE: CWE-918
CVSS v2-
CVSS v37.3
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
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
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/
Affected Vendors

Libuv - (1)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Improper access control

CVSS Scores as calculated by PRIOnengine
CVSS v26.4
AV:N/AC:L/AU:N/C:P/I:P/A:N
CVSS v39.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
MITRE CWE Top 25

Vulnerability weakness type is in the top 25 CWEs according to MITRE. View Mitre Top 25 CWEs

Exploits

No exploit code is reported to exist.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

-

Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

-

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.8 - Improper Access Control

Web Application Security Frameworks

Applicable if the issue likely affects a web application

WASC-28 - Null Byte Injection