CVE-2009-2320 in MV 410R
Summary
by MITRE
The web interface on the Axesstel MV 410R relies on client-side JavaScript code to validate input, which allows remote attackers to send crafted data, and possibly have unspecified other impact, via a client that does not process JavaScript.
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Analysis
by VulDB Data Team • 12/11/2017
The Axesstel MV 410R is a network device that provides web-based management interfaces for configuration and monitoring purposes. This particular vulnerability exists within the device's web interface implementation where input validation occurs entirely on the client-side through JavaScript code. The device fails to implement proper server-side validation mechanisms, creating a critical security gap that can be exploited by remote attackers. When client-side validation is the sole defense mechanism, malicious actors can bypass these protections by sending crafted data directly to the server without any JavaScript processing occurring on the client side.
This vulnerability represents a classic example of insufficient server-side input validation, which is categorized under CWE-20 - Improper Input Validation. The flaw allows attackers to circumvent client-side security measures by directly interacting with the web application's backend services without the need for client-side JavaScript execution. The device's web interface relies entirely on client-side validation to ensure data integrity, meaning that any input validation logic implemented in JavaScript can be entirely ignored by an attacker who can submit malformed data directly to the server endpoints. This architectural weakness enables attackers to potentially inject malicious content or manipulate the device's configuration in ways that would normally be prevented by client-side validation routines.
The operational impact of this vulnerability extends beyond simple data validation bypass. Since the device's web interface handles critical configuration parameters and administrative functions, an attacker who successfully exploits this vulnerability could potentially gain unauthorized access to device management functions, modify network settings, or disrupt service availability. The unspecified other impacts mentioned in the CVE description suggest that this vulnerability may enable additional attack vectors or escalation paths that could lead to more severe consequences. The device's reliance on client-side validation creates a false sense of security for administrators who may assume that all inputs are properly validated. This vulnerability aligns with ATT&CK technique T1210 - Exploitation of Remote Services, where adversaries exploit weaknesses in web applications to gain unauthorized access or manipulate system configurations.
The security implications of this vulnerability are particularly concerning given that the device operates in network infrastructure environments where unauthorized access could lead to significant disruptions or security breaches. Network administrators should consider that attackers could exploit this vulnerability to establish persistent access to network management systems, potentially enabling them to monitor traffic, modify routing tables, or compromise other connected network devices. The vulnerability demonstrates a fundamental security principle violation where client-side validation should never be considered sufficient protection against malicious input. Organizations should implement comprehensive server-side validation mechanisms that independently verify all input data regardless of client-side validation status. The recommended mitigations include implementing robust server-side validation controls, disabling JavaScript-based validation as a primary security mechanism, and ensuring that all input data is properly sanitized and validated before processing. Additionally, network segmentation and access control measures should be implemented to limit the potential impact of such vulnerabilities in the event of exploitation.