CVE-2023-1750 in NXG-100B
Summary
by MITRE • 04/04/2023
The listed versions of Nexx Smart Home devices lack proper access control when executing actions. An attacker with a valid NexxHome deviceId could retrieve device history, set device settings, and retrieve device information.
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Analysis
by VulDB Data Team • 04/05/2023
The vulnerability identified as CVE-2023-1750 affects Nexx Smart Home devices and represents a critical access control flaw that undermines the security posture of connected home ecosystems. This weakness stems from insufficient authentication and authorization mechanisms within the device management interfaces, allowing unauthorized parties to manipulate smart home infrastructure through legitimate device identifiers. The vulnerability impacts multiple versions of Nexx Smart Home products and exposes users to significant risks including unauthorized access to personal data, device manipulation, and potential compromise of entire home networks.
The technical implementation of this flaw involves a lack of proper session management and authorization checks when processing device commands through the NexxHome platform. Attackers can leverage a valid device ID to execute arbitrary actions without proper authentication, effectively bypassing the intended security controls that should protect device configurations and user data. This vulnerability operates at the application layer and specifically affects the device management protocols used by the Nexx Smart Home ecosystem, creating a pathway for attackers to escalate privileges and gain unauthorized control over connected devices.
From an operational impact perspective, this vulnerability creates substantial risk for end users who rely on smart home technologies for security and convenience. The ability to retrieve device history exposes users to privacy violations and potential surveillance risks, while the capability to modify device settings can lead to complete compromise of home security systems. The vulnerability enables attackers to manipulate lighting, temperature controls, and other smart home functions, potentially creating false security alerts or disabling protective measures. Additionally, the exposure of device information can facilitate further attacks against the broader network infrastructure.
The security implications extend beyond individual device compromise to encompass potential network-wide vulnerabilities within smart home ecosystems. This flaw aligns with CWE-285, which addresses improper authorization issues in software systems, and demonstrates how weak access controls can create cascading security failures. The vulnerability also maps to ATT&CK technique T1071.004, which covers application layer protocol manipulation, and T1082, which involves system information discovery. Organizations should implement immediate mitigations including device ID rotation, enhanced authentication mechanisms, and network segmentation to isolate smart home devices from critical network infrastructure.
Recommended remediation strategies include implementing robust session management with time-based token expiration, enforcing multi-factor authentication for device management interfaces, and establishing network-level controls to limit device communication. Security updates should address the root cause by strengthening access control mechanisms and ensuring that all device interactions require proper authentication. Device manufacturers should also consider implementing device fingerprinting and anomaly detection systems to identify unauthorized access attempts. Regular security assessments and penetration testing of smart home ecosystems are essential to identify similar vulnerabilities that could compromise user privacy and security. The vulnerability highlights the importance of security-by-design principles in IoT implementations and demonstrates the critical need for proper access control mechanisms in connected home technologies.