CVE-2024-41316 in A6000R
Summary
by MITRE • 07/22/2024
TOTOLINK A6000R V1.0.1-B20201211.2000 was discovered to contain a command injection vulnerability via the ifname parameter in the apcli_cancel_wps function.
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Analysis
by VulDB Data Team • 07/23/2024
The vulnerability identified as CVE-2024-41316 affects the TOTOLINK A6000R router model with firmware version V1.0.1-B20201211.2000, representing a critical command injection flaw that resides within the device's web management interface. This vulnerability specifically manifests through the ifname parameter within the apcli_cancel_wps function, which is part of the router's wireless access point client functionality. The issue stems from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before executing system commands, creating a pathway for malicious actors to inject arbitrary commands into the underlying operating system. The vulnerability falls under CWE-77 which categorizes command injection flaws as weaknesses that occur when a program constructs a system command using externally influenced input without proper validation or sanitization.
The operational impact of this vulnerability is severe as it allows remote attackers to execute arbitrary commands on the affected device with the privileges of the web server process, typically equivalent to the root user level. An attacker could leverage this vulnerability to gain complete control over the router, potentially enabling them to modify network configurations, establish persistent backdoors, intercept network traffic, or use the device as a pivot point for attacking other systems within the network. The attack surface is particularly concerning given that the vulnerability exists within a function designed for wireless network management, meaning that unauthorized access could compromise the entire wireless infrastructure of the network. This vulnerability aligns with ATT&CK technique T1059.001 which covers command and scripting interpreter, specifically targeting the execution of system commands through web interfaces.
The technical exploitation of this vulnerability requires an attacker to send a specially crafted HTTP request to the router's web interface, specifically targeting the apcli_cancel_wps endpoint with malicious input in the ifname parameter. The lack of proper input validation means that any shell metacharacters or command separators provided by an attacker would be directly processed by the system shell, enabling arbitrary command execution. This flaw demonstrates poor input sanitization practices and highlights the importance of implementing proper parameter validation and secure coding practices. Organizations should consider implementing network segmentation and access controls to limit exposure, while also ensuring that all network devices receive regular firmware updates from vendors. The vulnerability underscores the critical need for robust input validation and the principle of least privilege in embedded device security implementations.