CVE-2019-7564 in WM3300
Summary
by MITRE
An issue was discovered on Shenzhen Coship WM3300 WiFi Router 5.0.0.55 devices. The password reset functionality of the Wireless SSID doesn't require any type of authentication. By making a POST request to the regx/wireless/wl_security_2G.asp URI, the attacker can change the password of the Wi-FI network.
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Analysis
by VulDB Data Team • 09/15/2023
The vulnerability identified in CVE-2019-7564 represents a critical security flaw within the Shenzhen Coship WM3300 WiFi Router firmware version 5.0.0.55, specifically targeting the wireless security configuration management interface. This issue manifests as an authentication bypass vulnerability that fundamentally compromises the router's ability to protect its wireless network credentials. The flaw exists within the web-based management interface of the device, where the password reset functionality for the Wireless SSID is accessible without proper authentication mechanisms, creating an exploitable entry point for unauthorized network access.
The technical implementation of this vulnerability stems from inadequate input validation and authentication checks within the router's web server component. When an attacker submits a POST request to the specific URI path regx/wireless/wl_security_2G.asp, the device processes the request without verifying the user's credentials or authorization status. This represents a classic case of improper access control as defined by CWE-285, where the system fails to properly enforce authorization checks for privileged operations. The vulnerability allows for arbitrary modification of wireless security parameters, specifically enabling password changes without any form of authentication, which directly violates the principle of least privilege and proper authentication mechanisms.
The operational impact of this vulnerability extends beyond simple unauthorized password changes, as it provides attackers with complete control over the wireless network configuration. An attacker who gains access to this functionality can not only change the Wi-Fi password but potentially disable wireless security features, modify network settings, or create backdoor access points. This vulnerability aligns with ATT&CK technique T1078.004 which covers legitimate credentials, and represents a significant risk for both residential and enterprise network environments where these routers might be deployed. The exposure creates a persistent threat vector that can be exploited by anyone with network access to the router's management interface, potentially leading to complete network compromise.
Mitigation strategies for this vulnerability should include immediate firmware updates from the manufacturer, as the issue specifically affects a known version of the Coship WM3300 router. Network administrators should implement additional security measures such as restricting access to the router's management interface through firewall rules, requiring secure protocols like HTTPS, and implementing network segmentation to isolate management traffic. The vulnerability demonstrates the critical importance of proper authentication mechanisms and input validation, as outlined in CWE-347, which addresses improper verification of cryptographic signatures. Organizations should also conduct regular security assessments of network devices and implement monitoring solutions to detect unauthorized configuration changes, as this type of vulnerability can remain undetected for extended periods while providing persistent unauthorized access to network resources.