CVE-2024-24329 in A3300R
Summary
by MITRE • 01/30/2024
TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the enable parameter in the setPortForwardRules function.
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Analysis
by VulDB Data Team • 06/12/2025
The vulnerability identified as CVE-2024-24329 represents a critical command injection flaw within the TOTOLINK A3300R router firmware version V17.0.0cu.557_B20221024. This issue resides in the setPortForwardRules function where the enable parameter fails to properly sanitize user input, creating a pathway for malicious actors to execute arbitrary commands on the affected device. The vulnerability stems from insufficient input validation and output encoding mechanisms that allow attackers to inject malicious commands through the web interface, potentially compromising the entire network infrastructure. The affected device operates with elevated privileges, making this vulnerability particularly dangerous as successful exploitation could lead to complete system compromise.
The technical exploitation of this vulnerability follows a classic command injection pattern where the enable parameter in the setPortForwardRules function lacks proper input sanitization. When an attacker submits malicious input through this parameter, the system processes the command without adequate filtering, allowing the execution of arbitrary shell commands on the router's operating system. This flaw aligns with CWE-77 and CWE-94, which categorize command injection vulnerabilities as critical security weaknesses that enable attackers to execute unauthorized code. The vulnerability exists in the web application layer of the router's firmware, specifically within the port forwarding configuration functionality that administrators use to manage network traffic rules. Attackers can leverage this weakness to gain root access, modify router configurations, or even install persistent backdoors on the device.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with complete control over the network gateway device. Once compromised, the router can be used as a pivot point for further attacks within the local network, potentially enabling man-in-the-middle attacks, DNS hijacking, or traffic interception. The vulnerability affects the fundamental security posture of the network by allowing attackers to manipulate routing rules, redirect traffic, or disable security features. From an adversarial perspective, this vulnerability maps to multiple ATT&CK techniques including T1059.001 for command and scripting interpreter and T1071.004 for application layer protocol. The attack surface is particularly concerning given that many users may not regularly update their router firmware, leaving this vulnerability exposed for extended periods.
Mitigation strategies for this vulnerability should focus on immediate firmware updates from TOTOLINK, as the vendor has likely released patches addressing this specific command injection flaw. Network administrators should implement additional security measures including disabling unnecessary services, restricting administrative access to trusted networks, and monitoring for suspicious traffic patterns that may indicate exploitation attempts. The implementation of web application firewalls and input validation controls can provide additional layers of protection, though these measures are secondary to the primary requirement of firmware updates. Organizations should also consider network segmentation and the deployment of intrusion detection systems to monitor for anomalous behavior that might indicate exploitation of this vulnerability. Regular vulnerability assessments and security audits of network infrastructure should be conducted to identify similar weaknesses in other network devices that may present comparable risks.