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CVE-2024-53270

Estado: AnalizadaAlta (7.5)—

Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions `sendOverloadError` is going to assume the active request exists when `envoy.load_shed_points.http1_server_abort_dispatch` is configured. If `active_request` is nullptr, only onMessageBeginImpl() is called. However, the `onMessageBeginImpl` will directly return ok status if the stream is already reset leading to the nullptr reference. The downstream reset can actually happen during the H/2 upstream reset. As a result envoy may crash. This issue has been addressed in releases 1.32.3, 1.31.5, 1.30.9, and 1.29.12. Users are advised to upgrade. Users unable to upgrade may disable `http1_server_abort_dispatch` load shed point and/or use a high threshold.

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 CVSS AV:N/AC:L/PR:N/UI:N indica explotación remota sin autenticación (T1190). El crash por nullptr en sendOverloadError causa DoS de aplicación (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)

Envoyproxy — Envoy

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2024-53270",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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          "value": "CWE-670"
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      "source": "nvd@nist.gov",
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    {
      "lang": "en",
      "value": "Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions `sendOverloadError` is going to assume the active request exists when `envoy.load_shed_points.http1_server_abort_dispatch` is configured. If `active_request` is nullptr, only onMessageBeginImpl() is called. However, the `onMessageBeginImpl` will directly return ok status if the stream is already reset leading to the nullptr reference. The downstream reset can actually happen during the H/2 upstream reset. As a result envoy may crash. This issue has been addressed in releases 1.32.3, 1.31.5, 1.30.9, and 1.29.12. Users are advised to upgrade. Users unable to upgrade may disable `http1_server_abort_dispatch` load shed point and/or use a high threshold."
    },
    {
      "lang": "es",
      "value": "Envoy es un proxy de servicio, de borde y de medio alcance de alto rendimiento nativo de la nube. En las versiones afectadas, `sendOverloadError` asumirá que existe la solicitud activa cuando se configura `envoy.load_shed_points.http1_server_abort_dispatch`. Si `active_request` es nullptr, solo se llama a onMessageBeginImpl(). Sin embargo, `onMessageBeginImpl` devolverá directamente el estado ok si la secuencia ya se restableció y conduce a la referencia nullptr. El restablecimiento descendente puede ocurrir durante el restablecimiento ascendente de H/2. Como resultado, Envoy puede bloquearse. Este problema se ha solucionado en las versiones 1.32.3, 1.31.5, 1.30.9 y 1.29.12. Se recomienda a los usuarios que actualicen la versión. Los usuarios que no puedan actualizar pueden deshabilitar el punto de desconexión de carga `http1_server_abort_dispatch` o usar un umbral alto."
    }
  ],
  "lastModified": "2026-06-17T08:08:43.690",
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