CVE-2023-38829 in WF2409E
Summary
by MITRE • 09/11/2023
An issue in NETIS SYSTEMS WF2409E v.3.6.42541 allows a remote attacker to execute arbitrary code via the ping and traceroute functions of the diagnostic tools component in the admin management interface.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/04/2023
The vulnerability identified as CVE-2023-38829 affects the NETIS SYSTEMS WF2409E router model running firmware version 3.6.42541 and represents a critical remote code execution flaw within the diagnostic tools component of the admin management interface. This vulnerability specifically targets the ping and traceroute functions, which are commonly used network diagnostic utilities that should typically pose minimal security risk when properly implemented. However, in this case, the implementation contains a dangerous input validation flaw that allows remote attackers to inject malicious commands directly into these diagnostic functions, potentially enabling full system compromise without requiring authentication or physical access to the device.
The technical exploitation of this vulnerability stems from inadequate input sanitization within the ping and traceroute diagnostic utilities. When users submit commands through these interfaces, the system fails to properly validate or escape user-supplied parameters before executing them within the underlying operating system shell. This represents a classic command injection vulnerability that aligns with CWE-77 and CWE-88 categories, where attacker-controlled data is interpreted and executed as system commands. The flaw exists in the administrative web interface component where diagnostic tools are exposed to remote users, creating an attack surface that bypasses normal authentication mechanisms and allows arbitrary code execution with the privileges of the web server process.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise and potential network infiltration. An attacker who successfully exploits this vulnerability can gain full administrative control over the router, enabling them to modify network configurations, redirect traffic, install malicious software, or establish persistent backdoors. The attack vector requires no authentication, making it particularly dangerous as it can be exploited by anyone with network access to the device. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1059.007 for command and scripting interpreter, and T1021.001 for remote services, as it allows adversaries to execute commands remotely through legitimate administrative interfaces.
Organizations and network administrators should immediately implement mitigation strategies to address this vulnerability, beginning with firmware updates from NETIS SYSTEMS if available, or implementing network segmentation and access controls to limit exposure to trusted networks only. The recommended approach includes disabling the diagnostic tools component entirely if not required, implementing strict network access controls using firewalls to restrict access to the administrative interface, and monitoring network traffic for suspicious command execution patterns. Additional defensive measures should include regular vulnerability assessments, network intrusion detection systems to identify potential exploitation attempts, and maintaining detailed logs of administrative access and diagnostic tool usage. The vulnerability demonstrates the critical importance of input validation in web applications and the potential for seemingly benign diagnostic utilities to become attack vectors when proper security controls are not implemented.