CVE-2024-12653 in USB over Network
Summary
by MITRE • 12/16/2024
A vulnerability classified as problematic has been found in FabulaTech USB over Network 6.0.6.1. Affected is the function 0x22040C in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 12/18/2024
This vulnerability resides within the FabulaTech USB over Network software version 6.0.6.1, specifically targeting the ftusbbus2.sys driver component. The issue manifests in the IOCT Handler function identified by the identifier 0x22040C, representing a critical null pointer dereference flaw that can lead to system instability and potential privilege escalation. The vulnerability requires local access to exploit, meaning an attacker must already have access to the target system to leverage this weakness. This classification aligns with CWE-476 which specifically addresses null pointer dereference conditions that can cause application crashes or unexpected behavior. The public disclosure of this exploit represents a significant security risk as it provides threat actors with a documented method for compromising systems running the affected software. The lack of vendor response to early disclosure attempts creates a dangerous precedent where critical vulnerabilities remain unpatched and accessible to malicious actors. The IOCT Handler component serves as a crucial interface for handling input/output control operations within the USB over Network framework, making this vulnerability particularly concerning as it could disrupt core functionality or provide attackers with elevated privileges. The nature of the flaw suggests that when the system attempts to process certain IOCTL requests through the affected function, it fails to properly validate pointer references before dereferencing them, leading to potential system crashes or code execution. This type of vulnerability commonly maps to ATT&CK technique T1068 which involves the exploitation of legitimate credentials and system privileges to gain elevated access.
The operational impact of this vulnerability extends beyond simple system instability as it creates potential attack vectors for privilege escalation and system compromise. When a null pointer dereference occurs in kernel-mode drivers such as ftusbbus2.sys, the consequences can be severe as the operating system may crash or become unstable, potentially leading to denial of service conditions. More critically, the local access requirement does not prevent sophisticated attackers from leveraging additional attack vectors to gain initial access to systems, especially in enterprise environments where USB over Network solutions are commonly deployed. The vulnerability's presence in a driver component means that exploitation could potentially allow attackers to execute arbitrary code with kernel-level privileges, providing access to sensitive system resources and data. The fact that this exploit has been publicly disclosed indicates that threat actors are actively seeking opportunities to exploit this weakness, particularly in environments where the FabulaTech USB over Network solution is deployed. This creates a window of opportunity for attackers to compromise systems before any patches or mitigations are available, making the vulnerability particularly dangerous in the current threat landscape.
The absence of vendor response to early disclosure efforts represents a critical failure in the security community's ability to address this vulnerability promptly. This delay in remediation exposes users to ongoing risk while the vulnerability remains unpatched and publicly known. Security professionals should consider this vulnerability as a high-priority concern for any organization utilizing FabulaTech USB over Network 6.0.6.1, particularly in environments where local access might be compromised through social engineering or other attack vectors. The recommended mitigation strategies should include immediate implementation of access controls to limit local system access, deployment of network segmentation to reduce attack surface, and monitoring for suspicious system behavior that might indicate exploitation attempts. Organizations should also consider implementing endpoint detection and response solutions to identify potential exploitation attempts through anomalous driver behavior or system calls. The vulnerability's classification as a null pointer dereference places it within the broader category of memory safety issues that are commonly exploited in advanced persistent threat campaigns. This type of vulnerability often requires careful analysis of system logs and memory dumps to detect exploitation attempts, making it essential for security teams to establish appropriate monitoring procedures. The public disclosure of this exploit creates an urgent need for organizations to assess their exposure and implement appropriate controls to protect against potential compromise. The lack of vendor response also highlights the importance of community-driven security research and the need for organizations to maintain robust security practices even when vendors fail to provide timely updates.