Improper certificate management in AWS IoT Device SDK v2
Connections initialized by the AWS IoT Device SDK v2 for Java (versions prior to 1.4.2), Python (versions prior to 1.6.1), C++ (versions prior to 1.12.7) and Node.js (versions prior to 1.5.3) did not verify server certificate hostname during TLS handshake when overriding Certificate Authorities (CA) in their trust stores on MacOS. This issue has been addressed in aws-c-io submodule versions 0.10.5 onward. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.4.2 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.6.1 on macOS. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on macOS. Amazon Web Services AWS-C-IO 0.10.4 on macOS.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | software.amazon.awssdk.iotdevicesdk:aws-iot-device-sdk | < 1.4.2 | 1.4.2 |
| npm package | aws-iot-device-sdk-v2 | < 1.5.3 | 1.5.3 |
| Python (PyPI) | awsiotsdk | < 1.6.1 | 1.6.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-40829
- https://github.com/advisories/GHSA-743r-5g92-5vgf
- https://github.com/aws/aws-iot-device-sdk-cpp-v2
- https://github.com/aws/aws-iot-device-sdk-java-v2
- https://github.com/aws/aws-iot-device-sdk-java-v2/commits/v1.4.2
- https://github.com/aws/aws-iot-device-sdk-js-v2
- https://github.com/aws/aws-iot-device-sdk-python-v2
- https://github.com/awslabs/aws-c-io
- https://github.com/pypa/advisory-database/tree/main/vulns/awsiotsdk/PYSEC-2021-862.yaml
- https://github.com/awslabs/aws-c-io/
- CVSS vector
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-295- Platform
- Java / Kotlin (Maven), npm, Python (PyPI)
- Package
software.amazon.awssdk.iotdevicesdk:aws-iot-device-sdk, aws-iot-device-sdk-v2, awsiotsdk- Disclosed
- 23.11.2021
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2021-862 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-743r-5g92-5vgf - CC BY 4.0
Vulnerability history: awsiotsdk
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 11.2021 11.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 1
Disclosures per year
- 2021: 4
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
-
Improper certificate management in AWS IoT Device SDK v2 this entry
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