FKIE_CVE-2024-24806

Vulnerability from fkie_nvd - Published: 2024-02-07 22:15 - Updated: 2026-06-17 07:14
Severity
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/02/08/2Mailing List, Third Party Advisory
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/02/11/1Mailing List, Third Party Advisory
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/03/11/1
security-advisories@github.comhttps://github.com/libuv/libuv/commit/0f2d7e784a256b54b2385043438848047bc2a629Patch
security-advisories@github.comhttps://github.com/libuv/libuv/commit/3530bcc30350d4a6ccf35d2f7b33e23292b9de70Patch
security-advisories@github.comhttps://github.com/libuv/libuv/commit/c858a147643de38a09dd4164758ae5b685f2b488Patch
security-advisories@github.comhttps://github.com/libuv/libuv/commit/e0327e1d508b8207c9150b6e582f0adf26213c39Patch
security-advisories@github.comhttps://github.com/libuv/libuv/security/advisories/GHSA-f74f-cvh7-c6q6Exploit, Vendor Advisory
security-advisories@github.comhttps://gitlab.kitware.com/cmake/cmake/-/issues/26112
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2024/03/msg00005.html
security-advisories@github.comhttps://security.netapp.com/advisory/ntap-20240605-0008/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/08/2Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/11/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/03/11/1
af854a3a-2127-422b-91ae-364da2661108https://github.com/libuv/libuv/commit/0f2d7e784a256b54b2385043438848047bc2a629Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/libuv/libuv/commit/3530bcc30350d4a6ccf35d2f7b33e23292b9de70Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/libuv/libuv/commit/c858a147643de38a09dd4164758ae5b685f2b488Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/libuv/libuv/commit/e0327e1d508b8207c9150b6e582f0adf26213c39Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/libuv/libuv/security/advisories/GHSA-f74f-cvh7-c6q6Exploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.kitware.com/cmake/cmake/-/issues/26112
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/03/msg00005.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240605-0008/
Impacted products
Vendor Product Version
libuv libuv *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libuv",
          "vendor": "libuv",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.45.0, \u003c 1.48.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libuv:libuv:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A5D8905-1DA8-45F4-886D-2FDAA3C722DF",
              "versionEndExcluding": "1.48.0",
              "versionStartIncluding": "1.24.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "libuv es una librer\u00eda de soporte multiplataforma centrada en E/S as\u00edncrona. La funci\u00f3n `uv_getaddrinfo` en `src/unix/getaddrinfo.c` (y su contraparte de Windows `src/win/getaddrinfo.c`), trunca los nombres de host a 256 caracteres antes de llamar a `getaddrinfo`. Este comportamiento se puede aprovechar para crear direcciones como `0x00007f000001`, que `getaddrinfo` considera v\u00e1lidas y podr\u00edan permitir a un atacante crear payloads que se resuelvan en direcciones IP no deseadas, evitando las comprobaciones de los desarrolladores. La vulnerabilidad surge debido a c\u00f3mo se maneja la variable `hostname_ascii` (con una longitud de 256 bytes) en `uv_getaddrinfo` y posteriormente en `uv__idna_toascii`. Cuando el nombre de host supera los 256 caracteres, se trunca sin un byte nulo final. Como resultado, los atacantes pueden acceder a API internas o a sitios web (similares a MySpace) que permiten a los usuarios tener p\u00e1ginas `nombre de usuario.ejemplo.com`. Los servicios internos que rastrean o almacenan en cach\u00e9 estas p\u00e1ginas de usuario pueden quedar expuestos a ataques SSRF si un usuario malintencionado elige un nombre de usuario largo y vulnerable. Este problema se solucion\u00f3 en la versi\u00f3n 1.48.0. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."
    }
  ],
  "id": "CVE-2024-24806",
  "lastModified": "2026-06-17T07:14:55.463",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-24806",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-02-21T20:41:52.764681Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-07T22:15:10.173",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2024/02/08/2"
    },
    {
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      "tags": [
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      "url": "http://www.openwall.com/lists/oss-security/2024/02/11/1"
    },
    {
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      "url": "http://www.openwall.com/lists/oss-security/2024/03/11/1"
    },
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    },
    {
      "source": "security-advisories@github.com",
      "url": "https://gitlab.kitware.com/cmake/cmake/-/issues/26112"
    },
    {
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      "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00005.html"
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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