CVE-2008-7109 in Scanner File Utility
Summary
by MITRE
The Scanner File Utility (aka listener) in Kyocera Mita (KM) 3.3.0.1 allows remote attackers to bypass authorization and upload arbitrary files to the client system via a modified program that does not prompt the user for a password.
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Analysis
by VulDB Data Team • 01/21/2025
The vulnerability described in CVE-2008-7109 represents a critical authorization bypass flaw within the Scanner File Utility component of Kyocera Mita software version 3.3.0.1. This issue affects the security model of the system by allowing unauthorized remote access to client systems through a specially crafted modified program that circumvents the standard authentication mechanisms. The vulnerability specifically targets the listener functionality that handles file transfer operations, creating a pathway for malicious actors to execute arbitrary file uploads without proper user verification.
The technical implementation of this flaw stems from inadequate input validation and authentication controls within the Scanner File Utility's listener process. When a modified program attempts to establish a connection, the system fails to properly verify the authenticity of the requesting entity, allowing the malicious payload to bypass the standard password prompt mechanism that should normally require user interaction. This represents a fundamental breakdown in the security architecture where the authorization check is either completely omitted or rendered ineffective through the manipulation of the program's execution flow. The vulnerability is classified as a weakness in authentication mechanisms and falls under the broader category of privilege escalation vulnerabilities.
The operational impact of this vulnerability is severe as it enables remote code execution capabilities on client systems through unauthorized file uploads. Attackers can leverage this flaw to deploy malware, backdoors, or other malicious software directly onto victim machines without requiring legitimate user credentials or explicit user consent. The lack of user prompting for passwords creates an environment where automated attacks can succeed without any human intervention, making the exploitation process both stealthy and highly effective. This vulnerability essentially transforms the Scanner File Utility from a legitimate system component into a potential entry point for broader network compromise, potentially leading to full system takeover or data exfiltration operations.
Security professionals should implement multiple layers of defense to mitigate this vulnerability, including network segmentation to isolate critical systems, implementing strict firewall rules to restrict access to the Scanner File Utility ports, and ensuring that all Kyocera Mita software is updated to versions that address this authorization bypass. The vulnerability demonstrates the importance of proper access control mechanisms and highlights the need for thorough security testing of all components within enterprise software ecosystems. Organizations should also consider implementing intrusion detection systems to monitor for suspicious file upload activities and establish comprehensive patch management procedures to address such vulnerabilities promptly. This issue aligns with common attack patterns documented in the attack tree model where unauthorized access to system components leads to privilege escalation and persistent access within network environments.