CVE-2024-44551 in AX1806
Summary
by MITRE • 08/26/2024
Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function formGetIptv.
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Analysis
by VulDB Data Team • 06/15/2025
The vulnerability identified as CVE-2024-44551 affects the Tenda AX1806 router firmware version 1.0.0.1, presenting a critical stack overflow condition that arises from improper input validation within the formGetIptv function. This issue stems from the handling of the iptv.city.vlan parameter, which is processed without adequate bounds checking or sanitization mechanisms. The stack overflow vulnerability creates a potential entry point for remote code execution attacks, as malicious actors can manipulate the input parameter to overwrite adjacent memory locations on the stack, potentially leading to arbitrary code execution within the router's privileged execution context. The vulnerability resides in the router's web interface handling logic where user-provided parameters are directly processed without sufficient validation, making it susceptible to exploitation by attackers who can craft specially malformed requests.
The technical exploitation of this vulnerability follows a classic stack buffer overflow pattern where the iptv.city.vlan parameter is passed to the formGetIptv function without proper size validation. When the parameter exceeds the allocated stack buffer size, subsequent memory writes overflow into adjacent stack memory locations, potentially corrupting return addresses or other critical execution data. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is categorized under the broader weakness of buffer overflow conditions that can lead to arbitrary code execution. The attack vector is particularly concerning as it occurs within the router's web administration interface, meaning that remote exploitation is possible without requiring physical access to the device or authentication credentials. The vulnerability represents a significant security risk because it allows an attacker to potentially gain full control over the router's operating system and its network functions.
The operational impact of CVE-2024-44551 extends beyond simple remote code execution, as successful exploitation can provide attackers with complete administrative control over the affected Tenda AX1806 devices. This includes the ability to modify network configurations, redirect traffic, establish persistent backdoors, and potentially use the compromised device as a launch point for further attacks within the local network. The vulnerability affects all users running the specific firmware version 1.0.0.1, making it a widespread concern for network administrators who manage these devices. Additionally, the stack overflow condition could lead to denial of service scenarios where the router crashes or reboots repeatedly due to corrupted execution state, disrupting network connectivity for all connected devices. The impact is particularly severe in enterprise environments where these routers may serve as critical network infrastructure components, potentially affecting business continuity and network security posture.
Mitigation strategies for CVE-2024-44551 should prioritize immediate firmware updates from Tenda, as the vendor has likely released patched versions addressing this vulnerability. Network administrators should implement network segmentation and access controls to limit potential attack vectors, while also monitoring network traffic for suspicious activities that may indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1071.004 for Application Layer Protocol, indicating that exploitation may involve command execution and protocol manipulation. Organizations should also consider implementing intrusion detection systems capable of identifying malformed requests targeting the affected parameter, and conduct thorough network assessments to identify all affected devices. Regular security audits and vulnerability scanning should be implemented to ensure timely identification and remediation of similar issues across the network infrastructure, particularly focusing on embedded systems and network devices that may be vulnerable to similar buffer overflow conditions.