fkie_cve-2021-40830
Vulnerability from fkie_nvd
Published
2021-11-23 00:15
Modified
2024-11-21 06:24
Severity ?
6.3 (Medium) - CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
The AWS IoT Device SDK v2 for Java, Python, C++ and Node.js appends a user supplied Certificate Authority (CA) to the root CAs instead of overriding it on Unix systems. TLS handshakes will thus succeed if the peer can be verified either from the user-supplied CA or the system’s default trust-store. Attackers with access to a host’s trust stores or are able to compromise a certificate authority already in the host's trust store (note: the attacker must also be able to spoof DNS in this case) may be able to use this issue to bypass CA pinning. An attacker could then spoof the MQTT broker, and either drop traffic and/or respond with the attacker's data, but they would not be able to forward this data on to the MQTT broker because the attacker would still need the user's private keys to authenticate against the MQTT broker. The 'aws_tls_ctx_options_override_default_trust_store_*' function within the aws-c-io submodule has been updated to override the default trust store. This corrects this issue. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.5.0 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.6.1 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on Linux/Unix. Amazon Web Services AWS-C-IO 0.10.4 on Linux/Unix.
References
cve-notifications-us@f-secure.comhttps://github.com/aws/aws-iot-device-sdk-cpp-v2Product
cve-notifications-us@f-secure.comhttps://github.com/aws/aws-iot-device-sdk-java-v2Product
cve-notifications-us@f-secure.comhttps://github.com/aws/aws-iot-device-sdk-js-v2Product
cve-notifications-us@f-secure.comhttps://github.com/aws/aws-iot-device-sdk-python-v2Product
cve-notifications-us@f-secure.comhttps://github.com/awslabs/aws-c-io/Product
af854a3a-2127-422b-91ae-364da2661108https://github.com/aws/aws-iot-device-sdk-cpp-v2Product
af854a3a-2127-422b-91ae-364da2661108https://github.com/aws/aws-iot-device-sdk-java-v2Product
af854a3a-2127-422b-91ae-364da2661108https://github.com/aws/aws-iot-device-sdk-js-v2Product
af854a3a-2127-422b-91ae-364da2661108https://github.com/aws/aws-iot-device-sdk-python-v2Product
af854a3a-2127-422b-91ae-364da2661108https://github.com/awslabs/aws-c-io/Product
Impacted products
Vendor Product Version
amazon amazon_web_services_aws-c-io 0.10.4
amazon amazon_web_services_internet_of_things_device_software_development_kit_v2 *
amazon amazon_web_services_internet_of_things_device_software_development_kit_v2 *
amazon amazon_web_services_internet_of_things_device_software_development_kit_v2 *
amazon amazon_web_services_internet_of_things_device_software_development_kit_v2 *
linux linux_kernel -
opengroup unix -


To clipboard 

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   descriptions: [
      {
         lang: "en",
         value: "The AWS IoT Device SDK v2 for Java, Python, C++ and Node.js appends a user supplied Certificate Authority (CA) to the root CAs instead of overriding it on Unix systems. TLS handshakes will thus succeed if the peer can be verified either from the user-supplied CA or the system’s default trust-store. Attackers with access to a host’s trust stores or are able to compromise a certificate authority already in the host's trust store (note: the attacker must also be able to spoof DNS in this case) may be able to use this issue to bypass CA pinning. An attacker could then spoof the MQTT broker, and either drop traffic and/or respond with the attacker's data, but they would not be able to forward this data on to the MQTT broker because the attacker would still need the user's private keys to authenticate against the MQTT broker. The 'aws_tls_ctx_options_override_default_trust_store_*' function within the aws-c-io submodule has been updated to override the default trust store. This corrects this issue. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.5.0 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.6.1 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on Linux/Unix. Amazon Web Services AWS-C-IO 0.10.4 on Linux/Unix.",
      },
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         value: "El SDK de dispositivos de IoT de AWS v2 para Java, Python, C++ y Node.js añade una autoridad de certificación (CA) suministrada por el usuario a las CA root en lugar de anularla en los sistemas Unix. Los handshakes TLS tendrán así éxito si el par puede ser verificado desde la CA suministrada por el usuario o desde el almacén confiable por defecto del sistema. Los atacantes con acceso a los almacenes confiable de un host o que puedan comprometer una autoridad de certificación que ya esté en el almacén confiable del host (nota: el atacante también debe ser capaz de falsificar el DNS en este caso) pueden ser capaces de usar este problema para omitir el pinning de la CA. Un atacante podría entonces falsificar el broker MQTT, y dejar caer el tráfico y/o responder con los datos del atacante, pero no sería capaz de reenviar estos datos al broker MQTT porque el atacante todavía necesitaría las claves privadas del usuario para autenticarse contra el broker MQTT. La función \"aws_tls_ctx_options_override_default_trust_store_*\" dentro del submódulo aws-c-io ha sido actualizada para anular el almacén confiable por defecto. Esto corrige este problema. Este problema afecta a: Amazon Web Services AWS IoT Device SDK v2 para versiones de Java anteriores a 1.5.0 en Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 para versiones de Python anteriores a 1.6.1 en Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 para versiones de C++ anteriores a 1.12.7 en Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 para versiones de Node.js anteriores a 1.5.3 en Linux/Unix. Amazon Web Services AWS-C-IO 0.10.4 en Linux/Unix",
      },
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   id: "CVE-2021-40830",
   lastModified: "2024-11-21T06:24:52.133",
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   published: "2021-11-23T00:15:07.380",
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   vulnStatus: "Modified",
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            {
               lang: "en",
               value: "CWE-295",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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