CVE-2022-24006 in LinkHub Mesh Wi-Fi MS1G
Summary
by MITRE • 08/06/2022
A buffer overflow vulnerability exists in the GetValue functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crafted configuration value can lead to a buffer overflow. An attacker can modify a configuration value to trigger this vulnerability.This vulnerability represents all occurances of the buffer overflow vulnerability within the arpbrocast binary.
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Analysis
by VulDB Data Team • 08/06/2022
The CVE-2022-24006 vulnerability represents a critical buffer overflow flaw within the TCL LinkHub Mesh Wi-Fi MS1G_00_01 device firmware, specifically affecting the GetValue functionality of the arpbrocast binary component. This vulnerability resides in network infrastructure equipment that serves as a mesh Wi-Fi access point, making it particularly concerning for enterprise and residential network deployments where such devices form the backbone of wireless connectivity. The flaw manifests when the system processes configuration values through the GetValue function, which fails to properly validate input lengths before copying data into fixed-size buffers. This type of vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as the buffer overflow can potentially be exploited to execute arbitrary code within the device's operational context. Attackers who can modify configuration values through legitimate administrative interfaces or network protocols can craft malicious inputs that exceed buffer boundaries, leading to memory corruption that may result in system crashes, unexpected behavior, or more severe exploitation outcomes. The arpbrocast binary serves as a critical component in network address resolution and broadcast operations, making its compromise particularly dangerous as it can affect network communication integrity and potentially provide attackers with persistent access to the underlying network infrastructure. This vulnerability aligns with ATT&CK technique T1059.007, which covers command and scripting interpreter usage, as exploitation may involve injecting malicious code through the buffer overflow mechanism.
Network security professionals should recognize that this vulnerability represents a significant risk to mesh Wi-Fi network stability and security, particularly in environments where multiple devices operate within the same network fabric. The attack surface expands when considering that mesh networks often rely on automated configuration management and device discovery protocols that may be susceptible to manipulation. The vulnerability's presence in the arpbrocast binary indicates a deeper architectural concern with input validation and memory management practices within the device firmware. Organizations should implement immediate mitigations including firmware updates from TCL, network segmentation to limit access to administrative interfaces, and monitoring for anomalous configuration changes that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation and buffer management in embedded systems, particularly those serving as network infrastructure components where failure can cascade across entire network deployments.