CVE-2024-24328 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 setMacFilterRules function.
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Analysis
by VulDB Data Team • 08/28/2024
The vulnerability identified as CVE-2024-24328 represents a critical command injection flaw within the TOTOLINK A3300R router firmware version V17.0.0cu.557_B20221024. This issue manifests through the setMacFilterRules function where the enable parameter fails to properly sanitize user input, creating an avenue for malicious actors to execute arbitrary commands on the affected device. The vulnerability resides in the router's web interface handling mechanism, where insufficient input validation allows attackers to inject OS commands that are subsequently executed with elevated privileges. This command injection vulnerability directly maps to CWE-77 which categorizes improper neutralization of special elements used in commands, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter. The affected device operates with administrative privileges, making the impact of this vulnerability particularly severe as it allows for complete system compromise.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the enable parameter within the setMacFilterRules function. The router's firmware fails to validate or escape special characters in the input, allowing attackers to append operating system commands that are then executed by the underlying shell. This creates a persistent threat vector where attackers can gain unauthorized access to the device's command execution environment, potentially leading to full system control. The vulnerability is particularly dangerous because it leverages legitimate administrative functions within the router's interface, making detection more challenging for network security monitoring systems. The attack surface extends beyond simple command execution to include potential privilege escalation, data exfiltration, and network reconnaissance capabilities.
The operational impact of CVE-2024-24328 extends beyond immediate device compromise to encompass broader network security implications. Once exploited, attackers can establish persistent backdoors, modify router configurations, redirect network traffic, or use the compromised device as a launching point for further attacks against internal network resources. The vulnerability affects not only the individual device but also creates potential risks for the entire network infrastructure, as routers often serve as critical gateways and control points for network traffic. Organizations may experience unauthorized access to sensitive network data, disruption of network services, and potential compliance violations if the affected devices handle regulated information. The vulnerability's impact is amplified in environments where multiple TOTOLINK A3300R devices are deployed, as exploitation of one device can provide attackers with insights and access patterns that facilitate broader network infiltration.
Mitigation strategies for CVE-2024-24328 should prioritize immediate firmware updates from TOTOLINK to address the command injection vulnerability. Network administrators should implement network segmentation to isolate affected devices and monitor for suspicious network activity that may indicate exploitation attempts. Additional protective measures include disabling unnecessary administrative interfaces, implementing strict access controls, and deploying intrusion detection systems with signatures specific to command injection attacks. The vulnerability demonstrates the importance of input validation and proper sanitization of user-supplied data in web applications, aligning with security best practices outlined in the OWASP Top Ten and NIST cybersecurity frameworks. Organizations should also consider implementing network access control measures and regular vulnerability assessments to identify similar issues in other network infrastructure components. Given the severity of command injection vulnerabilities, organizations must maintain comprehensive patch management procedures and ensure timely deployment of vendor security updates to protect against known exploits.