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The AES key utilized in the pairing process between a lock using Sciener firmware and a wireless keypad is not unique, and can be reused to compromise other locks using the Sciener firmware.

CVE-2023-7003 identifies a cryptographic vulnerability in the Sciener Kontrol Lux smart lock system, specifically in firmware version 6.5.x. The issue stems from the reuse of an AES key and nonce pair during the pairing process between the lock and its wireless keypad. In cryptographic systems, nonces and keys must be unique per session or device to ensure secure encryption; reusing them can lead to key recovery or replay attacks. This vulnerability is classified under CWE-323 (Reusing a Nonce, Key Pair in Encryption), indicating a fundamental flaw in the implementation of cryptographic protocols. Because the same AES key is reused across multiple locks, an attacker who can capture or deduce the key from one device can potentially decrypt communications or impersonate the keypad to unlock other devices using the same firmware. The CVSS 3.1 score of 6.8 reflects a medium severity, with attack vector being physical (AV:P), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). The vulnerability does not require authentication or user interaction but does require proximity or physical access to the wireless communication channel. No patches or fixes have been published yet, and no exploits are known to be active in the wild. This vulnerability undermines the fundamental security guarantees of the lock system, potentially allowing unauthorized access to physical premises secured by these devices.

Detailed information about CVE-2023-7003: CWE-323 Reusing a Nonce, Key Pair in Encryption in Sciener Kontrol Lux affecting Sciener Kontrol Lux. Get real-time up

CVE-2023-7003: CWE-323 Reusing a Nonce, Key Pair in Encryption in Sciener Kontrol Lux - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-7003: CWE-323 Reusing a Nonce, Key Pair in Encryption in Sciener Kontrol Lux

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