ZKTeco Biometric System Found Vulnerable to 24 Critical Security Flaws
Jun 14, 2024
Device Security / Authentication
An analysis of a hybrid biometric access system from Chinese manufacturer ZKTeco has uncovered two dozen security flaws that could be used by attackers to defeat authentication, steal biometric data, and even deploy malicious backdoors. "By adding random user data to the database or using a fake QR code, a nefarious actor can easily bypass the verification process and gain unauthorized access," Kaspersky said . "Attackers can also steal and leak biometric data, remotely manipulate devices, and deploy backdoors." The 24 flaws span six SQL injections, seven stack-based buffer overflows, five command injections, four arbitrary file writes, and two arbitrary file reads. A brief description of each vulnerability type is below - CVE-2023-3938 (CVSS score: 4.6) - An SQL injection flaw when displaying a QR code into the device's camera by passing a specially crafted request containing a quotation mark, thereby allowing an attacker to authenticate as any user in th