CVE-2024-52272 in AC6V2
Summary
by MITRE • 12/04/2024
Stack-based Buffer Overflow vulnerability in Shenzhen Tenda Technology Co Tenda AC6V2 (fromAdvSetLanip(overflow arg:lanMask) modules) allows Overflow Buffers.This issue affects Tenda AC6V2: through 15.03.06.50
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Analysis
by VulDB Data Team • 05/29/2025
The vulnerability identified as CVE-2024-52272 represents a critical stack-based buffer overflow flaw within the Tenda AC6V2 wireless router firmware, specifically within the fromAdvSetLanip function where the lanMask argument is processed. This issue stems from improper input validation and memory management practices that allow malicious actors to overwrite adjacent memory locations on the stack, potentially leading to arbitrary code execution or system compromise. The vulnerability affects all firmware versions up to and including 15.03.06.50, indicating a widespread exposure across multiple generations of the device. The flaw occurs during the processing of Advanced Settings parameters, particularly when handling LAN network mask configurations through the web interface or API endpoints.
The technical implementation of this buffer overflow exploits a fundamental weakness in the software's memory handling mechanisms where the lanMask parameter value is directly copied or processed without adequate bounds checking. According to CWE-121, this constitutes a classic stack-based buffer overflow condition where the attacker-controlled input exceeds the allocated buffer size, causing adjacent stack memory to be overwritten. The vulnerability manifests when the device processes network configuration parameters through its administrative interface, making it accessible via both web-based management and potentially API calls. This flaw aligns with ATT&CK technique T1210, which describes the exploitation of vulnerabilities in network infrastructure devices to achieve persistent access or execute arbitrary commands.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as successful exploitation could enable attackers to gain full administrative control over the affected router. This compromise would provide access to the device's network configuration, potentially allowing attackers to redirect traffic, establish backdoors, or use the device as a pivot point for further attacks within the local network. The router's position as a central network hub makes it an attractive target for attackers seeking to maintain persistent access or conduct reconnaissance activities. The vulnerability's accessibility through standard web interface interactions increases the attack surface significantly, as no specialized tools or privileged access are required to exploit the flaw.
Mitigation strategies for CVE-2024-52272 should prioritize immediate firmware updates from Tenda, as the vendor has likely released patches addressing this specific vulnerability. Network administrators should implement network segmentation and access controls to limit exposure of these devices to untrusted networks, while also monitoring for unusual network traffic patterns that might indicate exploitation attempts. The implementation of network intrusion detection systems can help identify potential exploitation attempts by monitoring for malformed packets targeting the affected router interfaces. Additionally, device hardening practices such as disabling unnecessary services, changing default credentials, and implementing strong access controls should be enforced to reduce the overall risk profile. Organizations should also consider deploying network monitoring solutions that can detect anomalous behavior in their network infrastructure devices, particularly those running vulnerable firmware versions. The vulnerability underscores the importance of regular firmware updates and proper security assessment of network infrastructure components to prevent exploitation of known vulnerabilities.