CVE-2024-33213 in FH1206
Summary
by MITRE • 04/23/2024
Tenda FH1206 V1.2.0.8(8155)_EN was discovered to contain a stack-based buffer overflow vulnerability via the mitInterface parameter in ip/goform/RouteStatic.
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Analysis
by VulDB Data Team • 03/18/2025
The vulnerability identified as CVE-2024-33213 affects the Tenda FH1206 router model running firmware version V1.2.0.8(8155)_EN. This issue resides within the web interface management component of the device, specifically in the ip/goform/RouteStatic endpoint which handles routing static configuration parameters. The vulnerability manifests as a stack-based buffer overflow when processing the mitInterface parameter, representing a critical security flaw that could enable remote code execution or system compromise.
The technical implementation of this vulnerability stems from improper input validation within the web application layer of the router's firmware. When the mitInterface parameter is submitted through the RouteStatic form endpoint, the application fails to properly bounds-check the input data before copying it into a fixed-size stack buffer. This classic buffer overflow condition occurs because the developer did not implement adequate string length validation or sanitization measures before processing user-supplied data. The vulnerability is categorized under CWE-121 Stack-based Buffer Overflow, which is classified as a high-severity weakness in the Common Weakness Enumeration taxonomy. This weakness specifically targets buffer overflows that occur in stack memory regions, making them particularly dangerous for exploitation.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it presents a significant attack surface for malicious actors seeking to compromise network infrastructure. An attacker could potentially exploit this vulnerability remotely to execute arbitrary code on the affected device, leading to complete system compromise, unauthorized network access, or data exfiltration. The attack surface is particularly concerning given that the vulnerable endpoint is accessible through the standard web management interface, meaning that exploitation could occur without physical access to the device. This vulnerability aligns with ATT&CK technique T1210 Exploitation of Remote Services, where adversaries leverage unpatched network services to gain unauthorized access to target systems. The router's role as a network gateway makes it a prime target for attackers seeking persistent access or to establish a foothold for broader network infiltration.
Mitigation strategies for CVE-2024-33213 should prioritize immediate firmware updates from Tenda, as the vendor has likely released patches addressing this specific vulnerability. Network administrators should also implement network segmentation and access controls to limit exposure of affected devices to untrusted networks. Additional defensive measures include monitoring network traffic for suspicious patterns related to the vulnerable endpoint, implementing web application firewalls to filter malicious requests, and conducting regular vulnerability assessments of network infrastructure. The vulnerability demonstrates the importance of input validation and secure coding practices in embedded network devices, particularly those handling user-provided configuration data through web interfaces. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability class and maintain updated threat intelligence feeds to identify similar weaknesses in other network equipment.