TLS hostname validation issues within AWS IoT Device SDKs on Windows
CVE-2021-40828

6.3MEDIUM

Key Information:

Vendor

Amazon Web Services

Status
Aws Iot Device Sdk V2 For Java
Aws Iot Device Sdk V2 For Python
Aws Iot Device Sdk V2 For C++
Aws Iot Device Sdk V2 For Node.js
Vendor
CVE Published:
23 November 2021

What is CVE-2021-40828?

Connections initialized by the AWS IoT Device SDK v2 for Java (versions prior to 1.3.3), Python (versions prior to 1.5.18), C++ (versions prior to 1.12.7) and Node.js (versions prior to 1.5.1) did not verify server certificate hostname during TLS handshake when overriding Certificate Authorities (CA) in their trust stores on Windows. This issue has been addressed in aws-c-io submodule versions 0.9.13 onward. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.3.3 on Microsoft Windows. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.5.18 on Microsoft Windows. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on Microsoft Windows. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on Microsoft Windows.

Affected Version(s)

AWS IoT Device SDK v2 for C++ Microsoft Windows < 1.12.7

AWS IoT Device SDK v2 for Java Microsoft Windows < 1.3.3

AWS IoT Device SDK v2 for Node.js Microsoft Windows < 1.5.3

References

https://github.com/awslabs/aws-c-io/
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https://github.com/aws/aws-iot-device-sdk-cpp-v2
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https://github.com/aws/aws-iot-device-sdk-python-v2
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CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

F-Secure
.