Executive Summary

Naxclow devices use a uniform request-signing scheme that relies on a hard-coded, platform-wide salt embedded in every firmware image.

Because this salt is the same across all devices and can be recovered from any device, an attacker who obtains it can generate valid signatures for arbitrary device or account operations.

This is possible due to the absence of per-device keys, server-side nonce tracking, or replay protections.

Additionally, the system uses plain HTTP for control-plane traffic, which combined with the above weaknesses, enables broad request forgery and impersonation across the platform.

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Compliance Impact

This vulnerability allows attackers to forge requests and impersonate devices or accounts due to the use of a hard-coded platform-wide salt, lack of per-device keys, absence of server-side nonce tracking, and no replay protections. Additionally, the use of plain HTTP for control-plane traffic exposes sensitive operations to interception and manipulation.

Such weaknesses can lead to unauthorized access, data manipulation, and potential data breaches, which may violate security and privacy requirements mandated by standards like GDPR and HIPAA. Specifically, the inability to ensure data integrity and confidentiality could result in non-compliance with these regulations' requirements for protecting personal and sensitive information.

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Impact Analysis

An attacker who recovers the hard-coded salt can impersonate devices or accounts by forging valid requests.

This can lead to unauthorized control over devices, manipulation of device operations, and potentially compromise the entire platform.

The lack of replay protections and use of unencrypted HTTP traffic increases the risk of interception and misuse of control commands.

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