CVE-2024-33217 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 page parameter in ip/goform/addressNat.
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Analysis
by VulDB Data Team • 03/18/2025
The vulnerability identified as CVE-2024-33217 affects the Tenda FH1206 router model running firmware version V1.2.0.8(8155)_EN. This issue manifests as a stack-based buffer overflow within the web interface handling mechanism for the ip/goform/addressNat endpoint. The vulnerability specifically occurs when processing the page parameter, which suggests an insufficient input validation mechanism exists for user-supplied data within the router's web administration interface. The stack-based nature of this buffer overflow indicates that malicious input can overwrite adjacent memory locations on the program stack, potentially leading to arbitrary code execution or system instability.
This vulnerability falls under the Common Weakness Enumeration category CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite stack memory. The attack vector involves sending a specially crafted HTTP request to the affected router's web interface, specifically targeting the ip/goform/addressNat endpoint with a malformed page parameter. The operational impact of this vulnerability extends beyond simple denial of service, as it can potentially allow remote attackers to execute arbitrary code on the affected device with the privileges of the web server process. This represents a significant security risk for network infrastructure devices, particularly when considering that routers often serve as gateways to internal networks and may be accessible from untrusted networks.
The exploitation of this vulnerability can enable attackers to gain unauthorized access to the router's administrative interface, potentially leading to complete system compromise. According to the ATT&CK framework, this vulnerability maps to T1210 - Exploitation of Remote Services, where adversaries leverage weaknesses in network services to establish persistent access. The affected Tenda FH1206 device operates with default administrative credentials that may be easily discoverable, further exacerbating the risk. The buffer overflow could be exploited to inject malicious code that redirects traffic, establishes backdoors, or modifies network configurations. Given the widespread deployment of Tenda routers in residential and small office environments, this vulnerability poses a substantial risk to network security. Network administrators should consider implementing network segmentation and monitoring for suspicious traffic patterns to detect potential exploitation attempts.
Mitigation strategies should include immediate firmware updates from Tenda to address the buffer overflow vulnerability, as well as network-based security controls such as web application firewalls and intrusion detection systems. The router should be configured to disable unnecessary web interface access from external networks, and administrative access should be restricted to trusted IP addresses only. Regular security audits of network devices and network segmentation practices can help limit the potential impact of such vulnerabilities. Additionally, implementing secure network monitoring and logging practices enables early detection of exploitation attempts and provides forensic evidence for incident response activities. Organizations should also consider conducting vulnerability assessments to identify other potentially affected devices within their network infrastructure that may share similar vulnerabilities or configuration issues.