Description

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 macOS systems. Additionally, SNI validation is also not enabled when the CA has been “overridden”. 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 address this behavior. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.5.0 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.7.0 on macOS. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.14.0 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.6.0 on macOS. Amazon Web Services AWS-C-IO 0.10.7 on macOS.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  7.2 HIGH

Vector:  CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CNA:  F-Secure

Base Score:  6.3 MEDIUM

Vector:  CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score:  6.0 MEDIUM

Vector:  (AV:N/AC:M/Au:S/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/aws/aws-iot-device-sdk-cpp-v2	Product
https://github.com/aws/aws-iot-device-sdk-java-v2	Product
https://github.com/aws/aws-iot-device-sdk-js-v2	Product
https://github.com/aws/aws-iot-device-sdk-python-v2	Product
https://github.com/awslabs/aws-c-io/	Product

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

CVE Modified by F-Secure 5/14/2024 5:27:34 AM

Action	Type	Old Value	New Value

Initial Analysis by NIST 12/02/2021 9:50:53 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 768 characters. View Entire Change Record AND OR *cpe:2.3:a:amazon:amazon_web_services_aws-c-io:0.10.7:*:*:*:*:*:*:* *cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:java:*:* versions up to (excluding) 1.5.0 *cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:node.js:*:* versions up to (excluding) 1.6.0 *cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_
Added	CVSS V2		NIST (AV:N/AC:M/Au:S/C:P/I:P/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-295
Changed	Reference Type	https://github.com/aws/aws-iot-device-sdk-cpp-v2 No Types Assigned	https://github.com/aws/aws-iot-device-sdk-cpp-v2 Product
Changed	Reference Type	https://github.com/aws/aws-iot-device-sdk-java-v2 No Types Assigned	https://github.com/aws/aws-iot-device-sdk-java-v2 Product
Changed	Reference Type	https://github.com/aws/aws-iot-device-sdk-js-v2 No Types Assigned	https://github.com/aws/aws-iot-device-sdk-js-v2 Product
Changed	Reference Type	https://github.com/aws/aws-iot-device-sdk-python-v2 No Types Assigned	https://github.com/aws/aws-iot-device-sdk-python-v2 Product
Changed	Reference Type	https://github.com/awslabs/aws-c-io/ No Types Assigned	https://github.com/awslabs/aws-c-io/ Product