CVE-2024-3497 in e-Studio Multi-Function Peripheral
Summary
by MITRE • 06/14/2024
Path traversal vulnerability in the web server of the Toshiba printer enables attacker to overwrite orginal files or add new ones to the printer. As for the affected products/models/versions, see the reference URL.
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Analysis
by VulDB Data Team • 06/15/2024
This vulnerability represents a critical path traversal flaw within the web server component of Toshiba printer systems, exposing organizations to significant operational and security risks. The vulnerability allows remote attackers to manipulate file paths through the web interface, potentially enabling arbitrary file operations on the affected devices. Such path traversal vulnerabilities typically arise from inadequate input validation and improper handling of file system access requests within web applications. The affected Toshiba printer models likely implement a web server that processes user-supplied file paths without sufficient sanitization or access control mechanisms, creating an exploitable condition where attackers can navigate beyond intended directories and access or modify system files. This flaw directly violates secure coding practices and represents a failure in the principle of least privilege, where the web server should only permit access to designated directories and files.
The technical exploitation of this vulnerability involves crafting malicious requests that manipulate file path parameters to traverse directories and gain unauthorized access to sensitive system components. Attackers can leverage this weakness to overwrite existing configuration files, inject malicious code, or create new files that could compromise the printer's functionality or serve as persistent access points. The impact extends beyond simple file manipulation as it can enable attackers to modify the printer's operating system, install backdoors, or disrupt print services. This vulnerability aligns with CWE-22 Path Traversal and CWE-23 Improper Limitation of a Pathname to a Restricted Directory, both of which are fundamental security weaknesses that have been consistently identified in web applications and embedded systems. The attack surface is particularly concerning for networked printers as they often serve as entry points into corporate networks, especially when they lack proper network segmentation or security hardening.
The operational implications of this vulnerability are severe for enterprise environments where Toshiba printers are deployed. Organizations may experience unauthorized access to sensitive print jobs, data exfiltration through compromised printer storage, or complete service disruption if attackers corrupt critical system files. Printers often store user credentials, document queues, and configuration data that can be leveraged for further attacks within the network. The vulnerability creates opportunities for attackers to establish persistent access points, as printer systems typically operate continuously and may not be regularly monitored for unusual file modifications. This scenario aligns with attack patterns described in the MITRE ATT&CK framework under T1566 Initial Access and T1078 Valid Accounts, where attackers exploit weak access controls and legitimate system access to maintain persistence. Organizations may also face regulatory compliance issues if sensitive data is compromised through these printer vulnerabilities, particularly in environments subject to standards such as HIPAA, PCI DSS, or GDPR.
Organizations should immediately implement comprehensive mitigation strategies including firmware updates from Toshiba, network segmentation of printer devices, and disabling unnecessary web services when possible. The recommended approach involves applying vendor patches as soon as they become available, implementing network access controls to limit printer communication, and conducting thorough vulnerability assessments of all printer models within the environment. Additional protective measures include monitoring for unusual file access patterns, implementing network intrusion detection systems, and establishing secure remote management practices. Organizations should also consider disabling the web interface entirely if it is not required for business operations, as this eliminates the attack surface associated with the vulnerable web server component. Regular security audits of networked devices, including printers, are essential to identify similar vulnerabilities and ensure that all systems maintain current security postures consistent with industry best practices and compliance requirements.