CVE-2024-23059 in A3300R
Summary
by MITRE • 01/11/2024
TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the username parameter in the setDdnsCfg function.
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Analysis
by VulDB Data Team • 06/04/2025
The vulnerability identified as CVE-2024-23059 represents a critical command injection flaw within the TOTOLINK A3300R router firmware version V17.0.0cu.557_B20221024. This issue resides in the setDdnsCfg function which handles dynamic domain name system configuration settings. The vulnerability arises from insufficient input validation and sanitization of the username parameter, allowing malicious actors to inject arbitrary commands that execute with elevated privileges on the affected device. The flaw enables remote code execution capabilities, potentially compromising the entire network infrastructure managed by the router.
The technical implementation of this vulnerability stems from improper handling of user-supplied input within the router's web interface. When the username parameter is processed through the setDdnsCfg function, the system fails to properly sanitize or escape special characters that could be interpreted as command delimiters or execution operators. This lack of input validation creates a direct path for attackers to inject operating system commands that bypass normal authentication mechanisms. The vulnerability aligns with CWE-77 which specifically addresses command injection flaws in software systems. Attackers can exploit this weakness by crafting malicious HTTP requests containing specially formatted payloads that manipulate the username parameter to execute unauthorized commands on the underlying operating system.
The operational impact of CVE-2024-23059 extends beyond simple unauthorized access to encompass complete network compromise. Once exploited, attackers can gain root-level access to the router's operating system, enabling them to modify network configurations, install persistent backdoors, monitor network traffic, and potentially use the compromised device as a pivot point for attacking other systems within the local network. The vulnerability affects the router's dynamic DNS functionality, which is commonly used for remote access and network management, making it particularly attractive to threat actors seeking long-term access to network resources. This weakness creates opportunities for attackers to establish persistent command and control channels, as outlined in the attack techniques described in the MITRE ATT&CK framework under T1059 for command and scripting interpreter and T1071 for application layer protocol.
Mitigation strategies for CVE-2024-23059 require immediate action from network administrators to address the vulnerability before it can be exploited. The primary recommendation involves applying the latest firmware updates provided by TOTOLINK, as these patches typically include proper input validation and sanitization mechanisms for the affected username parameter. Network segmentation and firewall rules should be implemented to restrict access to the router's administrative interfaces, limiting exposure to trusted network segments only. Additionally, organizations should consider implementing network monitoring solutions capable of detecting anomalous command execution patterns or unusual network traffic originating from compromised devices. Regular vulnerability assessments and security audits of network infrastructure should be conducted to identify similar weaknesses in other network devices. The remediation process should also include disabling unnecessary services and features, particularly those related to dynamic DNS configuration, until proper security controls are in place. Security teams must maintain awareness of the evolving threat landscape and ensure that all network devices receive regular security updates as part of comprehensive vulnerability management programs.