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CVE-2021-32066

Estado: ModificadaAlta (7.4)—

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

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).

Tecnologías afectadas (2)

Oracle — JD Edwards Enterpriseone ToolsRuby-lang — Ruby

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-32066",
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          "authentication": "NONE",
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      "value": "An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a \"StartTLS stripping attack.\""
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en Ruby versiones hasta 2.6.7, versiones 2.7.x hasta 2.7.3, y versiones 3.x hasta 3.0.1. Net::IMAP no lanza una excepción cuando StartTLS falla con una respuesta desconocida, lo que podría permitir a atacantes tipo man-in-the-middle omitir las protecciones TLS, al aprovechar una posición de red entre el cliente y el registro para bloquear el comando StartTLS, también se conoce como \"StartTLS stripping attack\""
    }
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  "lastModified": "2026-06-17T03:52:44.373",
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