{
  "id": "CVE-2018-18558",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2019-05-13T13:29:02.103",
  "lastModified": "2023-11-07T02:55:19.017",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Espressif ESP-IDF 2.x and 3.x before 3.0.6 and 3.1.x before 3.1.1. Insufficient validation of input data in the 2nd stage bootloader allows a physically proximate attacker to bypass secure boot checks and execute arbitrary code, by crafting an application binary that overwrites a bootloader code segment in process_segment in components/bootloader_support/src/esp_image_format.c. The attack is effective when the flash encryption feature is not enabled, or if the attacker finds a different vulnerability that allows them to write this binary to flash memory."
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 un problema en Espressif ESP-IDF versi\u00f3n 2.x y versi\u00f3n 3.x anterior a 3.0.6 y versi\u00f3n 3.1.x anterior a 3.1.1. La comprobaci\u00f3n insuficiente de los datos de entrada en el gestor de arranque de la segunda etapa permite que un atacante f\u00edsicamente pr\u00f3ximo omita las comprobaciones de arranque seguras y ejecute c\u00f3digo arbitrario, creando un binario de aplicaci\u00f3n que sobrescriba un segmento de c\u00f3digo del gestor de arranque en el par\u00e1metro process_segment en el archivo components/bootloader_support/src/esp_image_format.c. El ataque es exitoso cuando la funci\u00f3n de cifrado flash est\u00e1 inhabilitada, o si el atacante encuentra una vulnerabilidad distinta que le permite escribir este binario en la memoria flash."
    }
  ],
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        "type": "Primary",
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          "attackVector": "PHYSICAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM"
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          "accessVector": "LOCAL",
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          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
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          "baseScore": 6.9
        },
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
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  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
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          "value": "CWE-20"
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          "operator": "OR",
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          "cpeMatch": [
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  "references": [
    {
      "url": "https://github.com/espressif/esp-idf/releases",
      "source": "cve@mitre.org",
      "tags": [
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}