CVE-2021-37384 in 423-41W-AC
Summary
by MITRE • 07/18/2023
A remote command execution (RCE) vulnerability in the web interface component of Furukawa 423-41W/AC before v1.1.4 and LD421-21W before v1.3.3 allows unauthenticated attackers to send arbitrary commands to the device via unspecified vectors.
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Analysis
by VulDB Data Team • 08/02/2024
This vulnerability represents a critical remote command execution flaw in the web interface component of Furukawa network devices including the 423-41W/AC and LD421-21W models. The issue affects firmware versions prior to v1.1.4 and v1.3.3 respectively, creating a significant security risk for organizations relying on these industrial networking devices. The vulnerability permits unauthenticated attackers to execute arbitrary commands on affected devices, effectively granting them full administrative control without requiring any credentials or prior access. This type of vulnerability falls under the CWE-78 category of Improper Neutralization of Special Elements used in OS Command Injection, where user-supplied input is directly incorporated into operating system commands without proper sanitization or validation. The attack vector remains unspecified in the CVE description, suggesting that the vulnerability may exist across multiple input points within the web interface component, potentially including form fields, URL parameters, or API endpoints that process user input. From an operational perspective, this vulnerability creates a severe risk for industrial control systems and network infrastructure, as attackers can potentially disrupt operations, gain persistent access, or use the compromised devices as entry points for lateral movement within networks. The lack of authentication requirements makes this particularly dangerous in environments where these devices are exposed to untrusted networks or the internet. The ATT&CK framework categorizes this vulnerability under T1059.001 Command and Scripting Interpreter: PowerShell and T1059.003 Command and Scripting Interpreter: Windows Command Shell, indicating the attack surface involves execution of arbitrary commands on the target system. Organizations utilizing these devices face potential risks including data exfiltration, system compromise, and disruption of critical network operations. The vulnerability demonstrates poor input validation practices and highlights the importance of implementing proper sanitization of user inputs in web applications. Security teams should immediately assess their network exposure to these devices and implement network segmentation to limit access to these vulnerable components. The remediation strategy involves upgrading to the patched firmware versions v1.1.4 and v1.3.3 respectively, while also implementing network-based controls such as firewalls and access control lists to restrict access to the web interface components. Additionally, organizations should conduct thorough vulnerability assessments of their industrial control systems to identify similar vulnerabilities in other network devices that may be susceptible to command injection attacks. The impact extends beyond immediate system compromise to include potential regulatory compliance violations and operational disruptions in industrial environments where network reliability and security are paramount. This vulnerability serves as a reminder of the critical importance of maintaining current firmware versions and implementing robust security practices in industrial networking equipment.