CVE-2024-24331 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 setWiFiScheduleCfg function.
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Analysis
by VulDB Data Team • 05/30/2025
The TOTOLINK A3300R router model running firmware version V17.0.0cu.557_B20221024 presents a critical command injection vulnerability that allows remote attackers to execute arbitrary commands on the affected device. This vulnerability resides within the setWiFiScheduleCfg function where the enable parameter is improperly handled, creating an opportunity for malicious actors to inject and execute unauthorized commands. The flaw represents a significant security weakness that could enable attackers to gain full control over the router's operational capabilities and potentially compromise the entire network infrastructure.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the web interface processing logic. When the enable parameter is submitted through the setWiFiScheduleCfg function, the system fails to properly sanitize user-supplied data before incorporating it into system commands. This insecure handling allows an attacker to append malicious commands that will be executed with the privileges of the web server process, typically running with elevated system permissions. The vulnerability maps directly to CWE-77 and CWE-89, which respectively address command injection and SQL injection flaws, and aligns with ATT&CK technique T1059.001 for command and script injection. The attack surface is particularly concerning as it requires no authentication for exploitation, making it accessible to remote attackers.
The operational impact of this vulnerability extends far beyond simple command execution, potentially enabling complete network compromise and persistent access. An attacker could leverage this vulnerability to modify network configurations, disable security features, install backdoors, or redirect traffic to malicious endpoints. The router's wireless scheduling functionality becomes a vector for unauthorized network manipulation, allowing attackers to disrupt services or create covert communication channels. Given that many home and small office networks rely on such devices for connectivity, the potential for widespread impact is significant. The vulnerability could also facilitate lateral movement within networks, as compromised routers often serve as entry points for accessing internal systems.
Mitigation strategies should focus on immediate firmware updates from TOTOLINK to address the identified command injection flaw, though organizations may need to implement network segmentation and monitoring as temporary measures. Network administrators should consider implementing intrusion detection systems to monitor for suspicious command execution patterns and establish strict access controls for router management interfaces. The vulnerability highlights the importance of input validation and the principle of least privilege in embedded device security. Organizations should also conduct thorough vulnerability assessments of their network infrastructure to identify similar weaknesses in other devices and ensure that all firmware updates are applied promptly. Additionally, implementing network access controls and monitoring for anomalous traffic patterns can help detect exploitation attempts before they result in successful compromises.