CVE-2024-24333 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 desc parameter in the setWiFiAclRules function.
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Analysis
by VulDB Data Team • 06/12/2025
The vulnerability identified as CVE-2024-24333 represents a critical command injection flaw within the TOTOLINK A3300R router firmware version V17.0.0cu.557_B20221024. This issue resides in the setWiFiAclRules function which processes the desc parameter, creating an avenue for malicious actors to execute arbitrary commands on the affected device. The vulnerability stems from insufficient input validation and sanitization of user-supplied parameters, allowing attackers to inject malicious commands that are subsequently executed with the privileges of the web server process. This type of vulnerability falls under CWE-77 which specifically addresses command injection flaws where user-controllable data is incorporated into system commands without proper sanitization. The affected device operates as a wireless router and access point, making it a prime target for attackers seeking to establish persistent access to network infrastructure.
The technical exploitation of this vulnerability occurs when an attacker submits a crafted payload through the desc parameter in the setWiFiAclRules function. The router's web interface processes this parameter without adequate validation, allowing malicious command sequences to be interpreted and executed by the underlying operating system. This command injection can potentially enable attackers to gain unauthorized access to the router's administrative interface, modify network configurations, redirect traffic, or even install malware on the device. The attack surface is particularly concerning as it allows for remote code execution without requiring authentication, given that the vulnerable function is accessible through the web management interface. The vulnerability aligns with ATT&CK technique T1059.001 which describes the use of command and scripting interpreters to execute malicious code, and T1021.001 which covers remote services such as web servers that can be exploited for unauthorized access.
The operational impact of CVE-2024-24333 extends beyond simple unauthorized access to encompass significant network security risks. Once compromised, the router can serve as a pivot point for attackers to move laterally within the network, potentially compromising other connected devices and systems. The device's role as a gateway to the internet means that successful exploitation could allow attackers to establish persistent backdoors, monitor network traffic, or use the router as a launchpad for attacks against external targets. Network administrators may find it particularly challenging to detect such compromises since the malicious activity could appear as legitimate network traffic. The vulnerability also poses risks to the confidentiality, integrity, and availability of network services, potentially leading to data breaches, service disruptions, or unauthorized network monitoring. Organizations using affected TOTOLINK A3300R devices face a heightened risk of supply chain attacks or targeted intrusions, especially in environments where network segmentation is not properly implemented. This vulnerability demonstrates the critical importance of firmware security and proper input validation in network infrastructure devices.
Mitigation strategies for CVE-2024-24333 should prioritize immediate firmware updates from TOTOLINK, as the vendor is likely to release patches addressing the command injection vulnerability. Network administrators should implement network segmentation to limit the potential impact of a compromised device and deploy intrusion detection systems to monitor for suspicious network activity. Access controls should be strengthened by disabling unnecessary web management interfaces and implementing multi-factor authentication where possible. Regular security assessments of network infrastructure devices should include vulnerability scanning to identify similar issues in other equipment. Organizations should also consider implementing network access control policies that limit the ability of compromised devices to communicate with external networks. The vulnerability highlights the necessity of maintaining up-to-date firmware across all network infrastructure components and underscores the importance of conducting regular security audits of network devices. Additionally, network monitoring should be enhanced to detect anomalous command execution patterns that might indicate exploitation attempts. Security teams should also prepare incident response procedures specifically addressing router compromise scenarios, given the critical nature of network infrastructure devices and their potential for widespread impact when compromised.