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CVE-2025-71330

Estado: AnalizadaAlta (8.7)—

image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector AV:N/PR:N/UI:N permite explotación remota sin autenticación (T1190). CWE-835 (bucle infinito) con ICNS malformado causa DoS al bloquear event loop de Node.js (T1499.004).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Image-size — Image-size

CWE

Referencias

JSON original (NVD)

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    "cvssMetricV40": [
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          "valueDensity": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
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  "affected": [
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  "published": "2026-06-10T14:16:30.387",
  "references": [
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      "url": "https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities",
      "tags": [
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      "lang": "en",
      "value": "image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely."
    },
    {
      "lang": "es",
      "value": "image-size hasta la versión 2.0.2 contiene una vulnerabilidad de denegación de servicio que permite a atacantes remotos bloquear permanentemente el bucle de eventos de Node.js al proporcionar un buffer de imagen ICNS especialmente diseñado. Los atacantes pueden diseñar un buffer ICNS que contenga bytes mágicos válidos y un campo de longitud de entrada con valor cero para desencadenar un bucle infinito en el analizador ICNS, ya que el desplazamiento nunca se incrementa cuando el campo de longitud de entrada es 0, lo que hace que la condición del bucle while permanezca verdadera indefinidamente."
    }
  ],
  "lastModified": "2026-10-05T16:10:00.443",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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