CVE-2024-46549 in Kasa KP125M
Summary
by MITRE • 09/30/2024
An issue in the TP-Link MQTT Broker and API gateway of TP-Link Kasa KP125M v1.0.3 allows attackers to establish connections by impersonating devices owned by other users.
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Analysis
by VulDB Data Team • 10/01/2024
The vulnerability identified as CVE-2024-46549 affects the TP-Link Kasa KP125M v1.0.3 device which utilizes an MQTT broker and API gateway for device communication within home automation ecosystems. This security flaw resides in the authentication and authorization mechanisms that govern how devices establish connections to the TP-Link cloud infrastructure. The vulnerability stems from insufficient validation of device identities during the connection process, allowing malicious actors to exploit weak authentication controls and potentially gain unauthorized access to other users' device accounts.
The technical implementation of this vulnerability manifests in the MQTT broker's failure to properly verify device credentials and ownership claims during the connection handshake process. This weakness creates an authentication bypass scenario where attackers can construct forged connection requests that appear to originate from legitimate devices. The flaw operates at the application layer and specifically targets the device registration and authentication protocols that TP-Link employs to maintain secure communication channels between user devices and their cloud services. According to CWE classification, this vulnerability maps to CWE-287 which addresses improper authentication issues in network services.
The operational impact of CVE-2024-46549 extends beyond simple unauthorized access to encompass potential full compromise of user home automation ecosystems. An attacker who successfully exploits this vulnerability could gain control over other users' smart plugs, potentially leading to unauthorized power consumption, remote access to connected devices, and the ability to manipulate home security systems. The attack surface becomes particularly concerning when considering that smart home devices often serve as entry points for broader network infiltration attempts. This vulnerability aligns with ATT&CK technique T1071.001 for application layer protocol usage and T1082 for system information discovery, as attackers could potentially enumerate connected devices and gather information about the target environment.
Mitigation strategies for this vulnerability require immediate attention from both TP-Link and end-users. TP-Link should implement robust device authentication mechanisms that utilize strong cryptographic signatures and certificate-based verification for all device connections. The company must enhance their MQTT broker implementation to validate device ownership through multi-factor authentication processes and implement proper session management controls. Users should immediately update to the latest firmware version when available, disable unnecessary remote access features, and consider implementing network segmentation to limit potential lateral movement. Additionally, network monitoring should be enhanced to detect anomalous connection patterns that might indicate unauthorized device impersonation attempts. The vulnerability highlights the critical importance of secure device identity management in IoT ecosystems and aligns with NIST SP 800-160 recommendations for secure IoT device lifecycle management and authentication protocols.