CVE-2020-15834 in MOFI4500-4GXeLTE
Summary
by MITRE • 02/01/2021
An issue was discovered on Mofi Network MOFI4500-4GXeLTE 4.1.5-std devices. The wireless network password is exposed in a QR encoded picture that an unauthenticated adversary can download via the web-management interface.
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Analysis
by VulDB Data Team • 02/21/2021
The vulnerability identified as CVE-2020-15834 affects Mofi Network MOFI4500-4GXeLTE 4.1.5-std devices, representing a critical security flaw in network infrastructure management. This issue stems from improper access control mechanisms within the web-based management interface, allowing unauthorized users to obtain sensitive network credentials through a seemingly benign QR code image. The flaw demonstrates a fundamental weakness in how the device handles authentication and authorization for administrative resources, creating a pathway for attackers to bypass normal security controls and gain access to wireless network configurations.
The technical implementation of this vulnerability involves the web management interface failing to properly validate user authentication status before serving the QR code containing the wireless network password. This misconfiguration allows any unauthenticated user to access the QR code image through direct URL access or by navigating to the appropriate endpoint within the web interface. The QR code itself encodes the WPA2 wireless password in a format that can be easily decoded by standard QR code readers, effectively providing attackers with immediate access to the network without requiring any authentication credentials. This represents a classic case of insecure direct object reference vulnerability where the system exposes sensitive resources without proper access controls.
The operational impact of this vulnerability extends beyond simple credential exposure, creating a significant risk for organizations relying on these devices for network connectivity. An attacker with network access can exploit this vulnerability to gain immediate access to wireless networks, potentially leading to full network compromise through lateral movement and privilege escalation. The exposure of wireless credentials through a QR code format makes this particularly dangerous as it can be easily shared and exploited by multiple attackers simultaneously. This vulnerability directly impacts the CIA triad by compromising confidentiality and integrity of network communications, potentially enabling man-in-the-middle attacks, unauthorized network access, and data exfiltration. The flaw aligns with CWE-284, which addresses improper access control, and can be mapped to ATT&CK technique T1046 for network service scanning and T1078 for valid accounts usage.
Mitigation strategies for this vulnerability should focus on immediate access control enforcement and network segmentation. Organizations should implement strong authentication mechanisms for all management interfaces, including multi-factor authentication and role-based access controls. Network administrators should disable unnecessary web management interfaces and ensure that all management traffic occurs over encrypted channels such as HTTPS with strong cipher suites. The device firmware should be updated to the latest available version from the vendor, as this vulnerability was likely addressed in subsequent releases. Network monitoring should be enhanced to detect unusual access patterns to management interfaces, and regular security assessments should be conducted to identify similar misconfigurations. Additionally, network segmentation should be implemented to isolate management interfaces from production networks, reducing the attack surface and limiting the potential impact of credential exposure. The vulnerability demonstrates the critical importance of proper access control implementation and highlights the need for comprehensive security testing of network infrastructure devices before deployment in production environments.