CVE-2024-35340 in FH1206
Summary
by MITRE • 05/24/2024
Tenda FH1206 V1.2.0.8(8155) was discovered to contain a command injection vulnerability via the cmdinput parameter at ip/goform/formexeCommand.
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Analysis
by VulDB Data Team • 05/24/2024
The vulnerability identified as CVE-2024-35340 affects the Tenda FH1206 router model running firmware version V1.2.0.8(8155) and represents a critical command injection flaw within the device's web administration interface. This vulnerability exists in the ip/goform/formexeCommand endpoint where the cmdinput parameter is processed without adequate input validation or sanitization measures. The flaw allows an attacker to inject arbitrary commands that will be executed with the privileges of the web server process, typically running with elevated permissions on the device. This represents a fundamental breakdown in the application's security controls and exposes the router to potentially severe exploitation scenarios.
The technical nature of this vulnerability aligns with CWE-77 and CWE-94, which specifically address command injection flaws where user-supplied input is directly incorporated into system commands without proper validation or escaping mechanisms. The vulnerability operates through a classic command injection vector where an attacker can manipulate the cmdinput parameter to execute unauthorized system commands on the affected device. This weakness enables attackers to gain unauthorized access to the router's underlying operating system, potentially allowing them to modify configurations, extract sensitive data, or establish persistent access points within the network environment. The attack surface is particularly concerning given that the vulnerability is accessible through the web interface, making it exploitable remotely without requiring physical access or advanced technical knowledge.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass a wide range of potential security breaches and network compromises. An attacker could leverage this vulnerability to execute arbitrary commands such as spawning reverse shells, modifying firewall rules, changing administrator credentials, or even installing malicious firmware. The router serves as a critical network gateway device, making successful exploitation potentially devastating for network security. The vulnerability could enable attackers to establish persistent backdoors, monitor network traffic, or use the device as a launching point for further attacks against internal network resources. This type of vulnerability directly violates the principle of least privilege and demonstrates a complete failure to implement proper input validation controls, creating an attack vector that could be exploited by both skilled attackers and automated exploit tools.
Mitigation strategies for CVE-2024-35340 should include immediate firmware updates from Tenda if available, network segmentation to limit access to the affected device, and implementation of network monitoring to detect suspicious command execution patterns. Organizations should also consider disabling remote management features when possible and implementing strict access controls for router administration interfaces. The vulnerability highlights the importance of input validation and proper sanitization practices as outlined in the OWASP Top Ten and MITRE ATT&CK framework's command and control categories. Network administrators should also consider deploying intrusion detection systems capable of identifying command injection attempts and monitor for unusual patterns in device management communications. Additionally, regular security assessments of network infrastructure devices are essential to identify similar vulnerabilities and ensure that all connected devices maintain current security patches and configurations.