CVE-2019-6441 in RT3050
Summary
by MITRE
An issue was discovered on Shenzhen Coship RT3050 4.0.0.40, RT3052 4.0.0.48, RT7620 10.0.0.49, WM3300 5.0.0.54, and WM3300 5.0.0.55 devices. The password reset functionality of the router doesn't have backend validation for the current password and doesn't require any type of authentication. By making a POST request to the apply.cgi file of the router, the attacker can change the admin username and password of the router.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 08/17/2024
This vulnerability exists in multiple Shenzhen Coship router models including RT3050, RT3052, RT7620, WM3300, and affects firmware versions 4.0.0.40, 4.0.0.48, 10.0.0.49, 5.0.0.54, and 5.0.0.55. The flaw stems from inadequate input validation and authentication mechanisms within the password reset functionality of these network devices. The vulnerability is categorized under CWE-306, which addresses missing authentication, and represents a critical security weakness in the device's access control implementation.
The technical exploitation of this vulnerability occurs through unauthenticated POST requests to the apply.cgi endpoint of the affected routers. This allows attackers to bypass all authentication checks and directly modify administrative credentials without providing the current password or any form of authorization. The lack of backend validation means that the system accepts password reset requests regardless of whether the requester has legitimate access rights to the device. This represents a fundamental failure in the principle of least privilege and demonstrates poor security design practices in the router's web interface implementation.
The operational impact of this vulnerability is severe and far-reaching for network administrators and end users. An attacker who gains access to the network can immediately take full control of the affected routers, potentially leading to complete network compromise. The vulnerability enables man-in-the-middle attacks, DNS hijacking, traffic interception, and unauthorized access to connected devices. Additionally, attackers can modify router configurations, disable security features, and establish persistent access points within the network. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1072 for Application Deployment, where adversaries can manipulate network infrastructure to maintain access.
Mitigation strategies should include immediate firmware updates from the manufacturer, network segmentation to isolate affected devices, and implementation of network monitoring to detect unauthorized access attempts. Network administrators should also disable unnecessary web interfaces, implement strong network access controls, and regularly audit router configurations. The vulnerability highlights the importance of proper authentication mechanisms and input validation in embedded systems, aligning with security best practices outlined in NIST SP 800-45 and ISO/IEC 27030 standards for network security. Organizations should also consider network intrusion detection systems to monitor for suspicious POST requests to web management interfaces and implement mandatory access controls to prevent unauthorized administrative access to network infrastructure devices.