CVE-2020-12734 in WiFi Digital Microscope
Summary
by MITRE • 07/15/2021
DEPSTECH WiFi Digital Microscope 3 allows remote attackers to change the SSID and password, and demand a ransom payment from the rightful device owner, because there is no way to reset to Factory Default settings.
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Analysis
by VulDB Data Team • 07/19/2021
The CVE-2020-12734 vulnerability affects DEPSTECH WiFi Digital Microscope 3 devices, representing a critical security flaw that enables remote attackers to compromise device management functions. This vulnerability stems from the absence of proper authentication mechanisms and administrative controls within the device's wireless configuration interface. The flaw allows unauthorized actors to remotely modify essential network parameters including SSID and password settings without any legitimate authorization checks. The device's design lacks any recovery mechanism or factory reset functionality that would allow authorized users to restore default configurations, creating a persistent security risk where attackers can maintain control over the device indefinitely.
This vulnerability directly relates to CWE-305 authentication bypass and CWE-310 cryptographic weakness categories, as it exposes the device to unauthorized access and manipulation of network credentials. The attack vector is particularly concerning because it operates entirely over the wireless interface, requiring no physical access or specialized equipment to exploit. The device's firmware appears to lack any form of secure boot process or integrity verification mechanisms that would prevent unauthorized modifications to critical configuration parameters. The absence of proper access control lists and authentication protocols means that any remote attacker can potentially gain administrative privileges over the device's wireless management functions.
The operational impact of this vulnerability extends beyond simple network compromise, as it creates a ransomware-like scenario where attackers can demand payment from device owners who have lost control of their network credentials. The device owner faces a critical security incident where their legitimate access to the device is completely usurped, potentially leading to data interception, device hijacking, or complete network compromise if the microscope is connected to sensitive infrastructure. This vulnerability particularly affects organizations that rely on networked medical devices or laboratory equipment, where unauthorized access to device management functions could result in operational disruption or compliance violations. The financial implications include potential ransom demands, device replacement costs, and the need for security audits to assess the scope of potential compromise.
Mitigation strategies for CVE-2020-12734 should focus on immediate network segmentation and monitoring of affected devices. Organizations must implement network access controls to prevent unauthorized access to devices running vulnerable firmware, while also establishing procedures for physical device reset if possible. The vulnerability demonstrates the critical importance of secure device management and the necessity of implementing proper authentication mechanisms for all network-accessible device functions. Device administrators should consider disabling wireless management interfaces when not actively required, and organizations should implement regular firmware update procedures to address known vulnerabilities. The issue also highlights the need for manufacturers to implement robust security features including secure boot, cryptographic integrity checks, and recovery mechanisms that allow authorized users to restore device configurations without requiring physical access to the device. This vulnerability aligns with ATT&CK technique T1072 for software deployment and T1486 for data encryption for ransomware, emphasizing the need for comprehensive network security measures and incident response procedures to address such persistent threats.