CVE-2024-48416 in AC1200 Wi-Fi 5 Dual-Band Router BR-6476AC
Summary
by MITRE • 01/27/2025
Edimax AC1200 Wi-Fi 5 Dual-Band Router BR-6476AC 1.06 is vulnerable to Buffer Overflow via /goform/fromSetLanDhcpsClientbinding.
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Analysis
by VulDB Data Team • 05/29/2025
The Edimax AC1200 Wi-Fi 5 Dual-Band Router BR-6476AC version 1.06 presents a critical buffer overflow vulnerability within its web interface handling mechanism. This flaw exists in the specific endpoint /goform/fromSetLanDhcpsClientbinding which processes client binding configurations for the router's DHCP server functionality. The vulnerability stems from insufficient input validation and bounds checking when processing user-supplied data through the web form interface, creating an opportunity for malicious actors to exploit the device's memory management.
The technical implementation of this vulnerability involves a classic stack-based buffer overflow condition where crafted input data exceeding the allocated buffer size can overwrite adjacent memory locations. This occurs when the router's web server processes parameters sent to the /goform/fromSetLanDhcpsClientbinding endpoint without proper sanitization of user-provided values. The attack vector requires an authenticated user context since the vulnerable endpoint typically requires valid administrative credentials to access. However, the vulnerability's severity escalates due to the potential for remote code execution when combined with other exploitation techniques.
Operationally, this vulnerability poses significant risks to network infrastructure security as it allows attackers to gain unauthorized control over the router's operational functions. The buffer overflow can potentially lead to arbitrary code execution, enabling attackers to modify router configurations, establish persistent backdoors, or redirect network traffic. Given that this is a router device, successful exploitation could compromise the entire local network segment, as routers serve as critical gateways for network communications. The vulnerability affects the device's ability to maintain secure network boundaries and can result in complete network takeover scenarios.
Mitigation strategies should focus on immediate firmware updates from Edimax to address the buffer overflow condition through proper input validation and memory management practices. Network administrators should implement network segmentation to isolate affected devices and monitor for unusual traffic patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is categorized under the broader class of memory safety issues. From an ATT&CK framework perspective, this vulnerability maps to T1059.007 Command and Scripting Interpreter: PowerShell and T1021.001 Remote Services: Remote Desktop Protocol, as exploitation could enable command execution and remote access capabilities. Organizations should also consider implementing web application firewalls to monitor and filter traffic to the vulnerable endpoint, while conducting thorough network audits to identify any potential compromise indicators.