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CVE-2025-32798

Estado: AnalizadaAlta (8.2)—

Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build recipe processing logic has been found to be vulnerable to arbitrary code execution due to unsafe evaluation of recipe selectors. Currently, conda-build uses the eval function to process embedded selectors in meta.yaml files. This approach evaluates user-defined expressions without proper sanitization, which allows arbitrary code to be executed during the build process.

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As a result, the integrity of the build environment is compromised, and unauthorized commands or file operations may be performed. The vulnerability stems from the inherent risk of using eval() on untrusted input in a context intended to control dynamic build configurations. By directly interpreting selector expressions, conda-build creates a potential execution pathway for malicious code, violating security assumptions. This issue has been patched in version 25.4.0.

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.

Vulnerabilidad de ejecución remota en conda-build vía eval() inseguro en selectores de meta.yaml. AV:N y PR:N indican acceso remoto sin privilegios. El atacante ejecuta código arbitrario durante la construcción del paquete (T1059).

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Anaconda — Conda-build

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-32798",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "id": "CVE-2025-32798",
          "role": "CISA Coordinator",
          "options": [
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              "automatable": "no"
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          "version": "2.0.3",
          "timestamp": "2025-06-17T18:11:11.970277Z"
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          "valueDensity": "NOT_DEFINED",
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          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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  "published": "2025-06-16T20:15:27.200",
  "references": [
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      "url": "https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/metadata.py",
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      "description": [
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          "value": "CWE-94"
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      "lang": "en",
      "value": "Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build recipe processing logic has been found to be vulnerable to arbitrary code execution due to unsafe evaluation of recipe selectors. Currently, conda-build uses the eval function to process embedded selectors in meta.yaml files. This approach evaluates user-defined expressions without proper sanitization, which allows arbitrary code to be executed during the build process. As a result, the integrity of the build environment is compromised, and unauthorized commands or file operations may be performed. The vulnerability stems from the inherent risk of using eval() on untrusted input in a context intended to control dynamic build configurations. By directly interpreting selector expressions, conda-build creates a potential execution pathway for malicious code, violating security assumptions. This issue has been patched in version 25.4.0."
    },
    {
      "lang": "es",
      "value": "Conda-build contiene comandos y herramientas para compilar paquetes conda. Antes de la versión 25.4.0, la lógica de procesamiento de recetas de conda-build era vulnerable a la ejecución de código arbitrario debido a la evaluación insegura de los selectores de recetas. Actualmente, conda-build utiliza la función eval para procesar selectores incrustados en archivos meta.yaml. Este enfoque evalúa expresiones definidas por el usuario sin la debida depuración, lo que permite la ejecución de código arbitrario durante el proceso de compilación. Como resultado, se compromete la integridad del entorno de compilación y se pueden realizar comandos u operaciones de archivo no autorizados. La vulnerabilidad se deriva del riesgo inherente de usar eval() en entradas no confiables en un contexto diseñado para controlar configuraciones de compilación dinámicas. Al interpretar directamente las expresiones del selector, conda-build crea una posible vía de ejecución para código malicioso, violando las suposiciones de seguridad. Este problema se ha corregido en la versión 25.4.0."
    }
  ],
  "lastModified": "2026-06-17T09:12:35.537",
  "configurations": [
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}