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CVE-2024-24806

CVE-2024-24806 · Improper Domain Lookup that potentially leads to SSRF attacks in libuv

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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 7.3 · Hoch · EPSS 2,0% · Korrektur verfügbar

Veröffentlicht
Aktualisiert

Technologie-Stack: system

Betroffene Produkte und Versionen

  • libuv

    Softwareversionen
    • >= 1.45.0, < 1.48.0: Betroffen

    Keine Korrektur veröffentlicht

  • libuv1 Debian:12

    Softwareversionen
    • 1.44.2-1
    Betroffene Versionsbereiche
    • ECOSYSTEM: < 1.44.2-1+deb12u1

    Auf 1.44.2-1+deb12u1 aktualisieren

  • libuv1 Debian:13

    Betroffene Versionsbereiche
    • ECOSYSTEM: < 1.48.0-1

    Auf 1.48.0-1 aktualisieren

  • libuv1 Debian:14

    Betroffene Versionsbereiche
    • ECOSYSTEM: < 1.48.0-1

    Auf 1.48.0-1 aktualisieren

  • libuv1 Ubuntu:20.04:LTS

    Softwareversionen
    • 1.30.1-1
    • 1.33.1-2
    • 1.33.1-2ubuntu2
    • 1.33.1-3ubuntu1
    • 1.34.2-1ubuntu1
    • 1.34.2-1ubuntu1.1
    • 1.34.2-1ubuntu1.3
    Betroffene Versionsbereiche
    • ECOSYSTEM: < 1.34.2-1ubuntu1.5

    Auf 1.34.2-1ubuntu1.5 aktualisieren

  • libuv1 Ubuntu:22.04:LTS

    Softwareversionen
    • 1.40.0-2ubuntu1
    • 1.42.0-1
    • 1.43.0-1
    Betroffene Versionsbereiche
    • ECOSYSTEM: < 1.43.0-1ubuntu0.1

    Auf 1.43.0-1ubuntu0.1 aktualisieren

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