CVE-2020-17519

Estado: AnalizadaAlta (7.5)⚠ Explotación activa

A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager process. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit b561010b0ee741543c3953306037f00d7a9f0801 from apache/flink:master.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 98%
Percentil entre todas las CVEs puntuadas: 100
Fecha de la puntuación: 2/10/2026

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).

CISA KEV — explotada activamente

Añadida al catálogo: 23/5/2024
Plazo de remediación: 13/6/2024
Uso conocido en ransomware: Unknown

🎯 Técnicas ATT&CK

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

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access95 %
Impacto principalT1005 Data from Local Systemcollection90 %

Vulnerabilidad en REST API de JobManager sin autenticación permite lectura de archivos locales. Vector CVSS AV:N/PR:N/UI:N confirma acceso remoto sin privilegios; CWE-552 indica acceso a recursos sin restricción adecuada.

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

Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Application Isolation and Sandboxing

Tecnologías afectadas (1)

Apache — Flink

CWE

CWE-552
CWE-552

Referencias

JSON original (NVD)

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  "vulnStatus": "Analyzed",
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  "descriptions": [
    {
      "lang": "en",
      "value": "A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager process. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit b561010b0ee741543c3953306037f00d7a9f0801 from apache/flink:master."
    },
    {
      "lang": "es",
      "value": "Un cambio introducido en Apache Flink versión 1.11.0 (y lanzado en versiones 1.11.1 y 1.11.2 también) permite a atacantes leer cualquier archivo en el sistema de archivos local de JobManager por medio de la interfaz REST del proceso JobManager.&#xa0;El acceso está restringido a los archivos accesibles por medio del proceso de JobManager.&#xa0;Todos los usuarios deben actualizar a Flink versión 1.11.3 o 1.12.0 si sus instancias de Flink están expuestas.&#xa0;El problema se corrigió en el commit b561010b0ee741543c3953306037f00d7a9f0801 de apache/flink:master"
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  "lastModified": "2026-06-17T02:59:04.010",
  "cisaActionDue": "2024-06-13",
  "cisaExploitAdd": "2024-05-23",
  "configurations": [
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          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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  "sourceIdentifier": "security@apache.org",
  "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Apache Flink Improper Access Control Vulnerability"
}